How To Jailbreak iPhone 4, iPhone 3GS On iOS 4.2.1 Using Greenpois0n [Windows]

Chronic Dev Team

Chronic Dev Team has just released greenpois0n to jailbreak iOS 4.2.1 for Windows for iPhone 4, iPhone 3GS, iPod Touch 4G,iPod Touch 3G and iPad.

In this guide, we will take you through the step by step procedure to jailbreak your iPhone 4 or iPhone 3GS on iOS 4.2.1 using greenpois0n.

Here are some important points to note before you proceed:

  • Please note that jailbreaking your iPhone may void your warranty and hence proceed with caution and at your own risk.
  • This guide is meant for iPhone 4, iPhone 3GS users only. iPod Touch 4G and iPod Touch 3G, iPod Touch 2G users can checkout this step-by-step guide and iPad users can checkout this step-by-step guide.
  • Greenpois0n supports iOS 4.2.1 and iOS 4.1. So you need to first update your iPhone with iOS 4.1 or iOS 4.2.1 to use greenpois0n. Please do NOT upgrade to iOS 4.1 or iOS 4.2.1 if you want to unlock your iPhone.
  • Please note that this guide is only meant for Windows users. Mac users can refer to this step-by-step guide.
  • greenpois0n does NOT hactivate your iPhone, so your iPhone should be activated via iTunes first.
  • Do not forget to backup your iPhone before you proceed. You can refer to this post for instructions on how to backup your iPod Touch.
  • Please ensure you are running latest version of iTunes, iTunes 10.1 or later.
  • After the jailbreaking process is complete, do not forget to checkout our article on tips to keep your iPhone secure.

You can follow these step-by-step instructions to jailbreak your iPod Touch:

  1. Go to http://www.greenpois0n.com/ and click on the Windows icon to download the latest version of greenpois0n. If the greenpois0n site is down then you can checkout this mirror site.
  2. Double click the greenpois0n zip file to extract the file and double click greenpois0n to launch the application.
  3. Next connect your iPhone to the computer and power it off.
  4. Then click on the Prepare to Jailbreak (DFU) button.
  5. You will be prompted to put your iPhone in DFU mode. Greenpois0n will take you through the necessary steps.
  6. Press and hold the Sleep/Wake button for 2 seconds.
  7. Keep holding the Sleep/Wake button and also simultaneously also press and hold the Home button for 15 seconds.
  8. Then release the Sleep/Wake button but continue holding the Home button for 15 seconds.
  9. Once the iPhone enters DFU mode, you should see Ready to Jailbreak, now click on the Jailbreak button.
  10. You should see greenpois0n jailbreaking your iPhone.
  11. After jailbreaking is complete, you should see the Quit button, click Quit button to close the application. You should see text in verbose mode scrolling on your iPhone’s screen.
  12. Your iPhone will reboot. After it has rebooted, you’ll notice that there is a new Loader application on your iPhone’s home screen.
  13. Tap on it to launch it. Select Cydia and then tap on Install Cydia button.
  14. After you have successfully installed Cydia, you can uninstall the Loader application as it is no longer required. Tap on the Options button and then Remove Loader.app button to uninstall it.
  15. That’s it, your iPhone is successfully jailbroken and you should see Cydia on the homescreen. Reboot your iPhone and launch Cydia to install the latest updates.

If you’re new to the jailbreaking world and wondering what to do after jailbreaking your iPhone, checkout our jailbreak apps category page to find out the apps you can install on your iPhone using the Cydia app, which is the App Store for jailbreak apps.

Troubleshooting steps:

  • You can checkout our post with all the troubleshooting tips if you had problems jailbreaking your iPhone.
  • If you don’t see Cydia in the Loader app after launching it then you can install Cydia using Redsn0w 0.9.6 RC8 (download link). You should just select Install Cydia from the list of options and don’t use the Monte option.
  • Greenpois0n recommends a clean restore so if the above steps don’t work then you can try to restore your iPhone if you desperately want a jailbreak as it is not ideal.
  • Connect your iPhone directly to your computer (not via a USB hub).

Updated: Greenpois0n does not support iPhone 3G, we’ve updated the post to remove references to iPhone 3G. Apologies for the inconvenience caused.

As always, let us know how it goes and if you have a tip that helped you jailbreak your iPhone using greenpois0n successfully then do share it in the comments section below.

[via iClarified]

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  • Bangbangg

    A+ work

    • Atlz

      easy jailbreak was able to keep my old baseband with tiny unmberlla also can unlock the phone with running 4.2.1

      • Artie

        I did this but the loader is not appearing and I’ve tried everything

  • DT

    cydia installed but will not open keeps putting back to my main screen to enter passcode.

    • http://www.iphonehacks.com/ iPhoneHacks

      Try reinstalling Cydia using Redsn0w as a workaround to see if it solves the problem. The link for Redsn0w 0.9.6 RC8 is available under Troubleshooting steps.

      • some guy

        i just restored it, and did it all over again and it worked. probably should have just gone the red snow route.

        • PaTr10T

          Probably should have done it right the first time like most others then you wouldn’t have needed to cover up your own embarrassment with the Red Snow route cop out statement !

  • RYPT

    Many thanks to the greenpois0n team!

  • DT

    ok ty will give that a try

  • SoftKill

    Nice and perfect, jailbreak it in less than 5 mins….THANKS A LOT GUYS.

  • mrklean01

    FIRST LOL
    it works great thanks guys a long wait but well worth it, for all the people that where bitching , say thank you

    • jessie

      Fail lol

  • Adn

    Jailbreak failed
    why ??

    • Pipo25

      This is perfect software! JB my Iphone 4 4.2.1 easily…got the error jailbreak failed atfirst, then i just turn off the passcode lock then retry the process and it worked perfectly…=)

  • Navydoc

    Works perfect….Thanks you!! I had previous tethered JB with Redsn0w and just used greenpois0n without restoring and everything worked..

    • B3GS

      How did you do it? did you just Run Green but untethered instead?

  • http://www.elsuridesktop.com.ar il Santi

    Kool, thanx!

  • kt45

    I already have my touch 4g jailbroken on 4.1 do i need to do the apple update to 4.21 to have it at jailbroken 4.21?

  • Adn

    My JB failed
    they told me Quit to reply)
    helppp

    • MJP

      Try switching off the passcode option. that can sometime make your iphone unable to JB.

  • DT

    downloaded redsn0w and its asking me to select ispw from pc ? wont let me continue.

    • HF

      Hi, are you able to re-install cydia?
      Can you provide me the steps? thanks!!!

    • dave

      u have to download the apple 4.2 ispw, google it as there are plenty of sites with it where u can download.

      than put the file into ur c: drive and select that file in red snow

  • Adn

    Jailbreak failed :(
    Quit ( Restart to Retry)

    • max

      Hi adn, Is your jailbreak successful? i also encounter the similar problem. How to resolve?

  • DT

    Did a Restore and SUCCESS !!!!! THANK YOU VERY MUCH !!!!!

  • peter

    worked nicely on the i4 but 3gs wont go into dfu…
    any suggestions?

    • Prez

      I am having the same exact problem w/ 3gs it will not go into DFU mode I can get my 3g into DFU mode but NOT my 3gs and I don’t want to pay someone to do something that I know how to do…

    • CM

      I’m having a similar problem with my iPhone 3G. I can get the phone into DFU mode (iTunes sees that it’s in DFU) but GreenPoison won’t detect DFU mode. Does anyone have any suggestions? I’m using a Sony laptop with Windows Vista 64Bit to do the jailbreak and I’m using the newest version of iTunes (10.1.2).

  • Cisco

    I’ve tried many times to jailbreak my iPhone 4, never jb before just bought it with 4.2.1, with windows 7 but I keep getting 2 brief windows stating ” ERROR: the process ituneshelpr.exe not found” as soon as I start GP. I continue with the jb only to have it fail every time. Anyone heard of or have this problem too?

    • Yo Mama

      Install the latest iTunes like the instructions say, you idiot. If you think you already have it, then uninstall then reinstall iTunes from scratch. If you use hijackthis or the like… Stop killing the ituneshelper!

  • peter

    try installing latest itunes?

    • Cisco

      I tried that as well, still getting the same error on GP. I’ve restarted, redownloaded GP, reinstalled itunes, and still getting the same iTuneshelpr.exe error xD

  • Dabam13

    Will this also work for an iPhone 3G iOS 4.2.1?

  • joneyone

    installed Cydia, rebooted device. When trying to launch Cydia greenpoison logo shows up and device locks(have to enter passcode) ???

  • V

    Guys can i upgrade my 3gs to 4.2.1 without changing my baseband? is it possible ?? and then JB it using GP..

    • Mac

      No u can’t. Did u read the Article correctly?? It says don’t upgrade to 4.1 and 4.2.1 if u want to unlock

    • Auburn2011

      You can keep your old baseband by using the newest version of Tiny Umbrella. It works and my iP4 is at 4.2.1 and baseband is 1.59.

      • V

        the question is…will it work for my 3gs..?

  • bambam

    after quit my phone freeze the screen is white ..now what? any help pls

    • http://blog.omotech.com Stan

      Stick the phone in your ass and it will get green pois0n. Dump!

  • Bill

    Win! My 3GS got poisoned by something green! ;)

    Win XP SP3, iphone 3GS. Cydia installed flawless.
    Worked 1st time. Safe to use as far as I can tell.
    Thank you guys!

  • princeofcanada

    ciya installed but will not open

  • gaivnnews

    that is great ,but mobile terminal could not start

  • iphone3g

    is this normal after i jailbroke my iphone 4 and it restarts and stuff the apple logo comes up and then changes to the greenpoisen logo and a spinning circle wheel comes up and then goes to lockscreen everythings working fine though but im just wondering.

    • Sha’

      Yes. It’s normal. It’s the new animated logo they created.

  • Lavender

    Will any nice person remind me again what the status is for baseband unlocks for 3gs on 4.2.1? Cheerzez!

  • Sha’

    Worked on first attempt. I am overjoyed!

  • http://iphonehacks Rose987

    It works!!!!!

  • Rom

    Jailbreakmatrix.com seems to think that UltraSn0w will be able to unlock the later baseband. Any confirmation on this?

  • rocky55

    my jb finish but i can’t see loader app , why ?

    • rocky55

      some 1 help me ple..

  • Kirill

    Will it still work if i will turn off and on the device?

  • Patrick

    It went through flawlessy…I just hate that I have to install all my cydia apps agains! I’ll be here for awhile!

  • pissed

    fucked my phone :S

  • hichnaj

    I have had the unthetered jailbreak before, and when i jailbreaked with greenpoison, i didn’t have a loader, cydia was already installed. so i didn’t have to do anything.

  • Radio

    i am using 3Gs with firmware 05.13.04. I am trying yo jailbreak it but every time i got an error.

    Quit (Restart to Retry)

    i tried it at least 5 times

    Help needed

  • HACKER

    THE JAILBREAKS HAVE BEEN DONE BY ALMOST EVERYBODY LIKE GEO HOT ,DEV TEAM, COMEX , AND NOW THE CHRONIC DEVELOPMENT TEAM SO IM NOT IMPRESS BY GREEN TEAM BECAUSE THE FACT OF THE MATTER IS NOBODY HAS FIGURE OUT HOW TO UNLOCK THE IPHONE PROPERLY.SO FAR THE ONLY UNLOCK AVAILABLE IS THE IPAD BASEBAND WHICH HAS RUIN THE BATTERY PERCENTAGE ON THE IPHONE AND THERE HAS NOT BEEN A FIX FOR THIS PROBLEM AS OF YET NOBODY!!!!!!!!!PERIOD…….. THERE ONLY PERSON THAT FIGURE OUT A PROPER UNLOCK WAS Sherif Hashim AND THAT WAS FOR 3.1.3 AND HE FAILED TO DELIVER FOR 4.1 HOW LONG HAVE WE BEEN WAITING FOR A PROPER UNLOCK WELL IM DONE WITH THE IPHONE AS IT SEEMS THAT ITS TO DIFFICULT TO UNLOCK NOW IM PRETTY SURE SOMEONE WILL FIGURE IT OUT BUT WHEN ANOTHER COUPLE MONTHS FORGET IT ABOUT IT IM FINALLY FOUND A PHONE THAT ACTUALLY FINALLY REALLY BEATS THE IPHONE AND THATS WINDOWS 7 PHONE I HEARD GEO HOT IS GOING TO BUY ONE WHICH MEANS A JAILBREAK IS SOON TO BE RELEASE FUCK APPLE TO MUCH BULL SHIT AND BESIDES THE GAMES ARE BETTER ON WINDOWS 7 WHY U ASK MICROSOFT THE PEOPLE WHO MADE XBOX 360 AND YES VIDEO GAMES LIKE CALLOF DUTY,HALO SO PLEASE RELEASE INSTALLOUS FOR WINDOWS PHONE 7 NO MORE FUCKING ITUNES AS THE IPHONE WORKS BETTER WITH APPLE COMPUTERS AND WINDOWS PHONE 7 WORKS BETTER WITH WINDOWS!!!! BUT WHY DO WE HAVE TO USE ITUNES SCREW THAT SORRY TO SAY THIS BUT PEOPLE HAVE TO LOOK AT THE PHONE IT IS SO MUCH MORE SEXIER AS THE IPHONE HAS BEEN CLONE AND IMPROVED TO WINDOWS PHONE 7 HELLO DONT BELIEVE HAVE A LOOK AT A LIVE PHONE NOT ONLINE GO TO A TMOBILE STORE AND JUST LOOK AT IT AND YOU WILL FALL IN LOVE AND NO I DONT WORK FOR THEM I HAVE A IPHONE 3GS NEWBOOTROM WITH THE IPAD BASEBAND AND IM GOING TO MAKE IT BY IPOD TOUCH AND NOT A PHONE ANYMORE AND FOR GEO HOT YOU HAVE GOOD TASTE IN PHONES.I HOPE OTHER HACKERS WILL ALSO HELP GEO HOT OUT TO FULL FILL THE PERFECT PHONE

    • http://www.iphonehacks.com/2010/08/grooveshark-streaming-music-iphone-app-removed-from-the-app-store.html Your Momma

      STFU….B!TCH.

    • Beat your ass

      STFU! You little cock monster!! instead of complaing about how you dont have a unlock, join ATT OR VERIZON YOU IDIOT!! quit being a dumbass and go do something about your little problem, because complaining on a website will get you no where! go to wndows 7! People like you dont need to own a precious iphone :)<3 B!tch!

    • Franc 3Gs

      “ONLY UNLOCK AVAILABLE IS THE IPAD BASEBAND WHICH HAS RUIN THE BATTERY PERCENTAGE ON THE IPHONE AND THERE HAS NOT BEEN A FIX FOR THIS PROBLEM AS OF YET NOBODY!!!!!!!!!PERIOD”
      I have 3Gs with 06.15.00 bb and there is no problem with battery percentage.When I upgraded bb to iPad bb everthing was fine.After some time I purshed some free App update and battery goes out in few hours.I start thinking and I remove all free Apps from iPhone and look miracle battery is OK again works fine without charging for few days.So everybody with battery percentage problem look for your free Apps on your iPhone remove it and maybe you wont have this problem like I do.

      • http://Thisone The dude

        Dude there are factory carrier unlocked iPhones. Just at full price, do either pay or wait patiently like most of us.

      • http://aussiecriminals.wordpress.com/ Snidley Whiplash

        Hi thanks for your reply, but how about you GPS.Do you have the same issues as most with ipad Baseband? No or very very slow gps rendering it a useless feature? I am the same as you, fixed the battery drain, but I still do not have GPS, which I want back, for driving, geocaching, bike riding, pedometer etc etc.It is a fantastcic feature…

    • http://blog.omotech.com Stan

      You’re so SILLY!

    • malomran

      They didn’t do it to impress you!

    • bro

      i think your CAPS key might be broken bro… go find some magnets and fix that shit like a real troll

  • http://www.iphonehacks.com/2010/08/grooveshark-streaming-music-iphone-app-removed-from-the-app-store.html Your Momma

    Did it. First run through it snagged. Restarted the jailbreak and worked perfect the second time. Thanks chronic dev. Will donate for sure!

  • Bahaa

    worked perfect

    3GS
    4G X3
    IPAD 32G X2
    IPOD 4G X2

    You Are My Team
    Waiting 4 Ultrasn0w 2.2 on 10 Feb to unlock the IPhone’s

    Thx again, u will get my donate

    • iPhone 3G

      February 10 an unlock for iPhone 4?? You sure??

  • Norimans

    Maybe a stupid question but is it unthetered for newbootrom 3gs also?

    • Ninbrown

      …..you said it that was a stupid one! Open your eyes …..

      • shuhrat

        so is it a yes or not? i have iphone 3gs new bootrom.

  • Deose

    Thanks a bunch!

    Also, change the tags on these images.

  • Norimans

    In the readme i read that you need to activate the device with itunes do’s this mean i need to start it with itunes every time i turn it on and of?

  • Greenish

    And Instalous?!

    How can ai do?

  • Thanga

    “Waiting 4 Ultrasn0w 2.2 on 10 Feb to unlock the IPhone’s”

    Thnx BAHAA R U sure?? Me I am waiting 4 that. Give more Details pls.

  • Radio

    Help needed

    i am using 3Gs with firmware 05.13.04. I am trying yo jailbreak it but every time i got an error.

    Quit (Restart to Retry)

    i tried it at least 5 times

  • Tony

    Thanks & Help needed!

    I have JB my iphone4 (iOS4.2.1) successfully. Yet, I cannot change the root password with MobileTerminal. The apps jump out immediately every time when i use it.

    Is there any possible way to change the Root Password without using the MobileTerminal?

    • Joseph

      Hey, can I ask if your iPhone 4 was freshly restored when you JBed yours? becuase my wasn’t and I keep getting Quit(Restart to Retry) again and again… Thanks for the quick reply…

      • Tony

        I backed up once before having the JB. I think I didn’t restore it. Should I have the restore before having JB?

  • worfson

    works like a charm. Great job.

  • PaulDev

    Awesome – no problems on 3gs!! Yipee!!

  • Adeeb

    worked absolutely fine…

  • McGough

    installed over previous redsn0w tethered jb, worked first time! great work!

  • iwannapassalgebra

    forgive me for asking but will jailbreaking decrease the battery life of my idevice? and will my device slow down??

    • stranger

      most likely, and definitely yes. there are no real advantages of jailbraking right now as this is not an unlock (fortunately in my country all phones are factory unlocked) also this wifi hotspot ppl are talking about is said to come in the next ios which should be released soon.

      • supernova

        Are you kidding me? Having Cydia and being able to install Installous is a huge advantage for the phone!! Oh, and the wifi hotspot you’re talkin’ about has been working for a longgggggg time on iOS 4… Of course you didn’t know coz you didn’t JB.. Wow! Such a n00b!!!

        • Andy

          Of course he didn’t know. He thinks there isn’t any advantages to jailbreaking. It’s all an advantage. Anytime someone hates on my “restricted”, “non-open source” iPhone, I throw the jailbreak in their face. Anytime some hates on AT&T for their shitty 2GB data cap, I throw my unlimited data in their face. Some of us are more fortunate than others. We’re the ones that can put up a fight(argument) and defend our iDevices against all the Androids(Droids) Verizon.

    • iwannapassalgebra

      BUT WILL MY BATTERY LIFE DECREASE? WILL THIS SLOW MY PHONE DOWN??

      • you.fail.at.reading

        your life meter and brain power is decreasing from your stupidity. good luck in algebra. learn how to search AND READ.. your question was already answered

  • DTT

    Could not have been any easier. Worked perfectly on my iPhone 4 with 4.2.1. Thank you!

  • r77w8c39

    Btw dropping by to say, it’s working perfectly.

  • Henry

    How can we activate the iphone first without original sim card? Can we activate using redsnow on 4.2.1, then use the greenpoison again to get the untethered jailbreak? Please answer.. Thanksssss…

  • illusive

    i take it this will not work with the iphone 3g with ios 4.2.1

  • iPhone Fan

    Great job,i have successfully jailbreak my iphone 4.waiting for ultrasn0w to unlock it .can’t find ultrasn0w in cylinda app store ?pls helps !!

  • panther

    after all the steps my iphone get black no power. cant get my iphone back on. please help

    • panther

      any help guys? did all i can but no power, my ipho is black after jailbreak

      • illusive

        your phone is in recovery mode and need to restore it through itunes mine did the same thing i cant get it to jailbreak at all

        • panther

          also via itunes no luck. i think its real dead.
          real good jailbrek i think :( @##@%@%#shit

  • KingIphone

    I successfully did JB and cydia is working fine but when I connect my Iphone to iTunes is asking for restore and Install installous but I can’t install download app anybody help

  • N4TUR3

    hey guys i jailbreaked my iphone 3gs successfully using greenposi0n.

    many thankx to the greenpois0n team!!!!

  • panther

    ye many thanks, for black screen!

  • B-Rad

    Having some some issues with itunes, it keeps giving me an error when I try doing the ipsw restore…

    Anyone else have this issue?? Please help!!

  • panther

    greenpoisn,team, still noting!! it wont turn on
    please some help!!!!!

  • phongthan

    failed on my 3GS/4.2.1 MC model.

  • Dealio

    has anyone JB the 3G have a buddy that needs it done ?

  • ukiphone

    i think i’ve sucessfully jailbroken my device and installed cydia but i no longer have the icon for app store. is that normal?

  • kevo

    doesnt work load of shit to be honest

  • panther

    still no solution for dead iphone after uloading this shit?

    • Franc 3Gs

      Did you tray hold together home and sleep button for 10-15 seconds?

      • panther

        tes, no help. try all but still black s screen

  • Dealio

    OK OK Jail-broken Iphone 4 4.1 was unable to restore attempted 5 times in the recovery mode did the jailbreak anyhow now jail-broken with the 4.2 all is well

  • paul bq

    Installed over redsnow and works perfectly. All my itunes and cydia apps are kept which I didn’t expect.

  • Franc 3Gs

    Thank you DevTeam great work two iPhone 4 in less then 10 minutes and everythig was fine without single error.

  • FLIP

    If im already teather Jailbreak do i still need to restore or can run green poisen over redsnow?

    • http://www.iphonehacks.com/ iPhoneHacks

      You can run it greenpois0n on top of it.

  • Lucas

    Works fine!
    I’ve made on 2x iPhone3GS + 1x iPhone4;
    One 3GS was jailbroken first with redsn0w 0.9.6(tethered) and running iPad Baseband (06.15.00) and everything all right! Including unlock. xD

  • FLIP

    So to continue my question since cydia’s already install do i re-intall with the loader or do i just delete the loader?

  • Cody

    I tried it and it worked to a point. When I launch cydia and try to install a package, it won’t work. I press the install button but nothing happens. Help?

  • C_A_N_O_N

    JB works after restored to 4.2.1 but having problem with Cydia.Is taking long time to download some apps than time out than error pop POSIX Error. ???? iPhone 4

  • C_A_N_O_N

    •Greenpois0n recommends a clean restore

  • C_A_N_O_N

    Can I reinstall Cydia on top of it using Redsn0w 0.9.6 RC8 ?

  • panther

    any help guys? after this shit i have black screed. try all, itunes, boit buttons for 2min, all, but stil nog sign of life

    • C_A_N_O_N

      U r still in DFU mode try to use Redsn0w 0.9.6 RC8 to recover. what firmware you have? what phone? was JB when you try GP ?

      • panther

        try all man, nog connetion to pc, itunes still black screen no sign of life damn.
        i cant get bit back

        • panther

          have\had 4.2.1 3gs new bootrom

          • panther

            and jailbreak is last greenpois0n version windows version

  • C_A_N_O_N

    There is a problem with Cydia (POSIX error).

  • cyclenut

    Thank you Chronic Dev Team, installed this over tethered jailbreak, working perfectly. Sweeeeeet!

  • The Geokaiser

    only issue is so far lock screen fails to reset itselfs every tme that i slide to open i dont get to put my password and thats kinda iffy

  • C_A_N_O_N

    After JB Cydia is not working poperly (POSIX Error)and is downloading release so long. Any ideas?. Can I reinstall Cydia using Redsn0w 0.9.6 RC8 on top of it ?.

  • TonyZ

    All worked ok for me. But one quick noobee question. Do I have to re-install all the Cydia apps that I had before the new jailbreak?

  • FLIP

    Wrks perfectly since i already had cydia it never installed a loader app. Now that i have an inteather i4 lets hope an unlock comes out soon..

  • Chris

    My 3gs does straight to recovery mode, not DFU mode.
    and greenp0ison doesn’t recognise the device It’s bery annoying restoring after every attempt! Any one else experienced the same?

  • Manastash

    Cool took 3 time, but works great. I think I was having timing problems with the button pushes. Up and running on a 3Gs..

  • Dealio

    ok used a clean computer able to restore iphone 4 without the 1013 error but Cydia unable to load the MY3G or mywi unable to locate package

  • code3addict

    I previously had the tethered jailbreak on my iPhone 4, restored my phone then tried this jailbreak. The loader installed fine, I downloaded Cydia, but when I rebooted the device the Greenpois0n logo freezes with no escape.

  • FLIP

    something that ive found out after the jailbreak gpsphone no longer work.

    • NigzWigz

      Have to tried it out on the road or walking around??

  • NigzWigz

    Jus read the gpsphone thing about not working… care to elaborte? Anyone having the same issue??

  • http://blog.omotech.com Stan

    Works for me. Thanks Dev-Team.

  • Mike

    Works well with my ipad, but it doesn’t with my old 3g. Greenpoison didn’t recognize DFU mode!!!

  • FLIP

    in Gpsphone the app crashes when i try to play a rom..It was working fine until after the jailbrek.Is there a fix for this?

  • judd

    Thank you heaps! If you follow the instructions to the letter then this will work perfectly. Just updated 3GS from 3.1.3 to 4.2.1 and then ran this it was perfect. Awesome!!!!

  • nick

    doesn’t work on my iphone 3g? any 1 can help..

  • vaibhav

    does iphone get its network unlock from this?

  • dava

    oh my god works perfect hello my amazing iphone4

  • Miss Sulieen

    Jailbreak successfully.. Thanks to team Green Poison!!

  • http://Awesome! fw_cowboy

    Great job guys! Well worth the wait. Where is all the $hit talkers from before? Come on, you owe them an apology!

  • dava

    oh thanks a lot Greenpois0n team

  • Big Jack

    it worked great on my wifes 3gs,, but would not pick my 3g phone up.. dont know why , but i broke my 3g with redsn0w 0.9.6 beta 4.

  • Gustavo

    Works great on i4!!!. Thanks!.

  • Tucson

    Does anyone missing “Note” app? I didn’t see it anywhere on my iPhone. Also, my “Photos” and “Camera” does not work; after I start the app, it says “updating Library…” half way and CRASH!

  • Escheyder

    This SW works perfectly. I had a tethered jailbreak using Redsn0w for Windows. Without doing a full restore I applied Greenpois0n’s jailbreak and everything I had installed before from Cydia works now. By the way, I have an iPhone 4 model. Way to go Cronic Dev Team!!!!

  • Wishkid

    Jailbreak works like a charm. I like the new way the phone update firmware it does not delete any content not even the music in your phone that way there is not more restore from backup sweet!

    Thanks green team !!

  • hamzah

    Every time i tried to go in DFU, i a message on itunes kept saying that i was in recovery mode. this was after i followed the instructions on greenpois0n. why would it not met me jailbreak?

  • skooter247

    What is the best way to keep/retrieve all of the sourse/packages that you have dl’ed when you update and re-jailbreak? I used PkgBackup once before but it didnt work.. so what do y’all suggest?

  • TIM

    i tried to put my phone in dfu mode, now phone will not turn back on, please help, 3g just updated to 4.2.1 before trying this

  • TIM

    got it nm

  • anna

    I am an Iphone 3G user and this did not work for me.
    I tried multiple times. I can get iPhone in DFU mode but greenpois0n doesn’t recognize ( keeps saying try again) any suggestions I noticed Iphone 3G was not listed in reamed file

  • Tan

    Hi, can anybody tell me plz how to activate iPhone 4 without original sim card and from where I can buy those phonebook sim cards, Thanx

  • Dawn

    really need some help..

    iphone 3g 4.2.1
    fresh restore
    modem firmware 05.15.04
    redsnow 0.9.6b6

    ive been #$^$%&ing with this thing for a week! It wont go any further than DFU mode in redsnow. Its worth mentioning i’m on windows vista 64. Also, im using an old sim card that has been activated with itunes in order to make this iphone into an ipod touch so i can use the wifi without the data plan.Am i missing a step? Do i need to hacktivate it, or unlock it first? this will be my first jailbreak and i would REALLY like to donate to the team here..but i cant seem to get this thing right! the genius at the apple store told me that they couldnt help me with turning it into an ipod touch, im out of warranty. Screw em, im going to jailbreak it. i swear i will donate if someone can get me to the point where i can use my iphone 3g (as an ipod touch) to get on wifi at home and work.

  • martin

    i just tried to put my phone in dfu mode but the start jailbreak button doesn’t appear, can somebody please help me because my phone isn’t starting up anymore

  • Marco

    Yes,,,,, it’s great, works very nice. Congratulations!!!!!!!!!!!!!!!!!!!!!

  • Booger

    I JB’d iPhone 4 after upping to 4.2.1. Everything was looking good til I tried to make a phone call. I get ringing and then the phone locks up hard! I have to hard boot it (home+power). It comes up in SafeMode and then I restart again to get back to normal. Any thoughts? Anyone else?

  • Hinangel

    So, if i can unlock my iphone , and use with T-mobile?

  • DarkAnubus

    GREAT! Ya’ll keep this up! loving it.

  • Tiffany Sapphire

    hello once i jailbreak it can i unlock my iphone 3g?

  • Jacana

    Has anyone had any trouble with the time it takes to jailbreak their iphone 3GS?

    Mine seems to be taking longer that I would have thought? :(

  • William

    I installed lastest itunes and iphone software Everytime I do it it fails to jailbreak HELP

  • rogito

    Is anyone having problems with changing the slider to a Tap too unlock? can’t get around to fixing this issue. any suggestions would be helpful….thx

  • vaibhav

    does iphone4 get its network unlock from this?

  • vaibhav

    when is unlock will be available for iphone 4?

  • vaibhav

    base band 03.10.01

  • MacDaddyPDX

    Why the hell other than your a cheep ass would you want to use a iphone on any other GSM carrier than AT&T? I would throw my phone out the window into oncoming traffic on a freeway if I had to go back to using edge! One question though, dose this still mean if the battery dies,, you have to re-jailbreak the phone?

    • vaibhav

      kick ur ass….we don’t have at & t here in INDIA….plzz tell how to unlock it to use here in india with any crrier…tnx

      • jellyfish

        u cannot do it right now, wait..

        • vaibhav

          thnx jellyfish….but have to wait how many days???plzzz tell

  • danwonski

    I need help. I have a refurb 3GS with 4.2.1. I get jailbreak failed. I have tried 2 different computers and I also updated to the latest iTunes but that did not help. What is my next step? Thanks for the help

  • crow

    according to readme file it says noting about iphone 3g, Ive tried SEVERAL TIMES but i cannot get it to go into DFU mode can someone please help!!!!??????

  • lius

    why my iphone got BLANK !!!!!
    help me guys

  • Filthyjason

    This worked great on my 3GS with the old bootrom. I finally upgraded off 3.0.1, which I would have done sooner but I didn’t get my SHSH blobs signed in time.

  • why!!!

    hello i have a iphone 3gs (new bootrom) and its not working i have restored it and i have the latest itunes but it keeps on failing plz help and its a bloked phone if that makes and diff

  • Frank with 3G

    Please help I have a 3GS and it worked fine but my wife’s 3G is a different storey, I can not get it into DFU mode! I have been trying ALL day today!! I’m about to throw her phone out the window! Both phones are running on 4.2.1 which I just updated to today and I am using Windows Vista, can someone please tell me how to get this 3G into DFU mode??? Please!! Thanks.

  • MoonOpium

    My 3G will not go into DFU neither!! any help, update? Thx

    • Dirtnap

      Mine neither :(

    • http://www.iphonehacks.com/ iPhoneHacks

      greenpois0n does not support iPhone 3G. We’ve updated the post to remove references of iPhone 3G. Sorry for inconvenience caused.

  • GomezJr

    Has anyone actually READ the RC5 Readme? Because iPhone 3G is NOT listed in there … yet it is here in this article title(??). So has ANYONE gotten GP-Win to work on 3G? I have tried multiple Windows systems with no USB hubs yet GP can’t see DFU mode. And yet I can see the driver in Device Mgr. 64-bit, 32-bit, Win XPsp3 mode … yep, have wasted a few hours now. Alway the “Try Again” button.

    Never tried GP before. But if it bottoms at 3GS when 4.2.1 is the last 3G release EVER, I’ll be curious what the real limitation was.

    • http://www.iphonehacks.com/ iPhoneHacks

      You’re right greenpois0n does not support iPhone 3G. We’ve updated the post to remove references of iPhone 3G. Thanks for pointing it out and sorry for inconvenience caused.

  • vaibhav

    when will phone be used for other network..unlock will be released???

  • http://iphonetrump.com ramz

    Every time you Buy a new iphone, you need it to do one thing, the other thing and even every think.To get these multitude tasks on your Iphone, you need it to be unlocked properly using risk free methods,to get rid of the rick, please take a time to get the help at<a href="http://iphonetrump.com&quot; Iphone unlocking software, which i found very helping for myself.

  • http://www.GoddardJewelry.com Abel

    2 issues. First, JB worked on both my iPhone 4 and my wife’s 3GS. However, first problem: I keep getting crashes on my 4. Like, many times a day. That’s my big issue, and would love a solution.

    Second, I never saw anywhere that 3GS wasn’t getting all the new text tones. That sucks. At least we can customize an individual’s notification.

  • B3GS

    Guys,

    I HAVE A 3GS,(NEW bOOT) UNLOCKED TO 6.15. IOS 4.21 BUT TETHERED BY REDSNOW. NOW CAN I USE GREEN TO JB AGAIN BUT UNCHECK CYDIA AND CHECK UNTETHERED?

    THANKS.

  • Dirtnap

    Worked immediately on 3GS with no probs, runs great, thanks!! JB my 3G with REdsnow, but really want GP on it!!
    Why does the TITLE of this article list iPhone 3G if it isn’t true? Please correct it or tell me what I’m doing wrong! Windows 7 running in Compatability for XP sp2, and it will not pick up DFU mode even though it IS in DFU!

    • http://www.iphonehacks.com/ iPhoneHacks

      You’re right, greenpois0n does not support iPhone 3G. We’ve updated the post to remove references of iPhone 3G. Thanks for pointing it out and sorry for inconvenience caused.

  • http://Thisone The dude

    So I tried the GP RC4&5 and both work fine, well almost but now my push is not working properly on my iPad, I tried it a total of 4 times, 2 on Mac with rc4 and rc5 from a clean restored iPhone both times, and 2 from windows 7 with RC4 and RC5 also from clean rested iPhone both times.

    As soon as I reload my push enabled Apps they don’t actually push data. Not even native mail app. No my FeeddlerPro not my picture of the day enabled apps I have to manually fetch the data. But the apps do retrieve the Pushed data when I restore to un Jailbroken iOS on both the iPod touch and iPad.

    Any one else having this issues?

    Also bug is reproduced on my ipod touch 4th g.

  • Yienkou

    My led flash stopped working after jailbreaking, did anybody else experience this problem?

  • your gay

    the iphone is a great phone and the reason why our phone technology is awesome now but im sorry whats great about looking at apps all day why not look at some cool animation like the evo like moving clouds and a big clock that flips the new phones theses days are looking sexier then ever and dont use installous as an excuse cuz u can pirate apps on any phone so what is it that makes you an addict? cydia links are all broken almost and customize on phones that have video wallpaper sound cooler so what is it?maybe its because u think there nothing better then the iphone u dont think people can copy a product and improved it.i get it you love being in apple jail and always begging to get out of jail bothering people about the release date every year the only thing apple has is more apps and most of them suck.its a great phone but its old every one trying to tweak it all the time to make it good so why not buy an evo or windows 7 or a samung galaxy thats already tweak and better they look much better u might need glasses.the samung galaxy has pictures of xbox avatars and u click the picture of the avatar and it calls the person now thats a cool tweak u cant find that in cydia if your an xbox fan so what the hell is it that makes you love the iphone i know it aint the games cuz there available on the other phones too and a matter of fact there better on windows 7 phone cuz it is microsoft the makers of xbox so what the fuck is it what app is it that has you hook what tweak is it thats got you hook.im just curious is all the iphone 4 looks like my 3gs almost.facetime is available on all phones now so what is it?im sorry but only a retard would say the iphone looks better.dont tell me its netflix cuz windows phone 7 has it.i bet you iphone 5 is going to look just like iphone 4 cuz all models look the same for some reason dam apple cant you make a phone look different from the others seriously u guys are out of ideas so u make all your phones look the same i cant tell from 3gs new old 3g lol and its sad apple that cydia has more ideas then you and how many times does springboards crash when u find something cool?so what is it i know is it the apple logo lol

  • your gay

    it doesnt even support flash player like the other phones do too !!!!!!!!

  • vaibhav

    when will the baseband 3.10.01 on iphone 4 will be unlock????plzz help

  • PleaseHelp

    Hi,
    First off the bat:
    1. Iphone 3gs
    2. JB to 4.1

    I tried loading (via restore) directly 4.2.1, this failed.. and now i just cant restore any version of the firmware.. any ideas? It just sits there on 2/3 completed for f/w load..

    Thanks
    Sam

  • Dwreck

    I did it step by step to jailbreak my iPhone but for some reason the loader app didn’t load rite have any ideas to fix it

  • jesse

    worked great. u guys are awsome

  • Mike Beccs

    Thanks to all the dev team fro this..i dont no what i would do with out you guys….your the best

  • vaibhav

    when will the baseband 3.10.01 on iphone 4 will be unlock????plzz help…urgent

  • Felipe

    How about BB 03.10…any unlock available?!

  • nobody

    The JB is working fine, Thank Dev team. me and my friends having some problem. seem like we can’t receive sms, it hang once sms coming. Anyone encounter this problem?

  • Success!!!

    3GS 4.2.1, 06.15.00 baseband; jailbroken over redsnow… My iPhone is now untethered. Many thanx to Chronic Dev Team.

    • B3GS

      Success,

      can you tell me the steps? i have the same phone and same situation. redsnow JB, 4.2.1,baseband 6.15.

  • Pitbull

    Works like a charm A++ from me =) Thanks alot guys

  • Success!!!

    iPhone 3GS (4.2.1 ipsw, 06.15.00 bb) jailbroken over redsn0w… Has to have internet conection and greenpois0n has to be in some form of hard drive. Greenpois0n has to download som files to complete the jailbreak… Easiest Jailbreak so far. Thank you Chronic Dev Team. keep up the good job…

  • Sue

    How come when I open Loader, Cydia is not in it?

  • Gman

    My ipad on version 3.3.2 Jailbroken LimeRa1n, I want to update to 4.2.1 and jailbreak again with greenpoison. Any body can tell me how to do it?
    Thanks

  • Taru

    Worked perfectly with my factory unlocked iphone 4, version 4.2.1. Thanks Team!

  • ziya gencer

    used redsn0w without any problem

    be sure that do NOT pres sleep buton, first.

    you must pres sleep and home butons at the same time and then release sleep buton 10 secs. later and keep pressing home buton for more 15 secs.

  • marley

    Hey,

    Donno if anyone can help, but this is just wierd. I have had jailbroken iphones since the begining. A few nights ago, my iphone 4 began to lose a charge over night. That was on 4.1. I had not installed anything new via cydia in weeks. On Friday I missed school b/c my phone died overnight.
    Yesterday I went to apple (after performing a quick restore) and after much complaining, they gave me a brand new iphone. It came stock with 4.2. I jailbroke with greenpoison. I added 1 source, hackulo, and two tweeks (infinidock and infinifolders). Please keep in mind that I set this up as a new iphone and did not restore from a backup. My battery is depleting at an unfathomable rate. It cannot hold a charge over night (I sleep for 12 hours, but c’mon :)
    If anyone has any feedback, please respond, I would be eternally greatful if someone could tell me what the problem is.

  • albert

    hi will it work on iphone 4 with latest firmware???? i just bought iphone yesterday ,and will it activate the carrier unlock too>?

  • Imajica

    2 questions..

    1) i bought a factory unlocked iphone 4 from apple. Will i lose the factory unlock during the jb process?

    2) i have 4.01 JB. I did a backup via itunes. If i update to 4.2.1 … can i restore a backup and get all my apps back, installed and everything back in their folders or do i have to do that all over again manually?

  • 4ndr0id

    Works perfectly! Thank you all at the Dev team! Long wait but it was worth it. Great job!
    First time I jailbreak myself (usually let my friends do it), it took me less than 1min!
    Thanks once again!

  • rozi (indonesia)

    i was succes by step by step from Greenpoison until”quit”…. but my iPhone say “insert a valid SIM with no PIN lock to activate iPhone” can you help me???? in Indonesia I use “simPATI” SIM Card..

  • Serg J.

    After a first jailbreak try, it failed on iPhone4… and after that i cannot connect to 3G network, the “3G” doesn’t appear anymore, and also i noticed that “Internet Tethering” option is trying to activate or something, the little spinning star is going round and round forever..
    I did a DFU restore and same problem, i even got the jailbreak right this time, but no 3G connection… PLEASE HELP
    please help.

  • john

    my lock button doesnt wrok.. is there any other way

  • amonrule666

    Dude great work!!!!!!!!!!!!!!
    Appreciate a lot.. I am a newbe and it worked perfectly without n e hesitance.

  • Ed

    Hello,

    I’ve been trying to jailbreak my 3gs but my phone always stucks in whitescreen after jailbreaking it. Please help.

    Thanks =)

  • John

    have been trying to JB my 3GS IOS 4.2.1 with greenpois0n for the past 2 days and always stuck at Quit(Restart to Retry). I even reset my phone as a new phone and still no luck. Any suggestion anyone?

    • John

      Finally success. But, I have to use the older version of greenpois0n(gp_win_rc5_b2). Thanks Dev Team.

  • vaibhav

    can we unlock firmware 3.10.01 on iphone 4????plzzz help

  • kidcut

    I just followed all of your steps and everything went perfectly. I used this on my Korean iPhone and I want to know should I be able to use my phone in the states?

  • Ali

    Hi, i was jailbreaking my iphone 4 but it has now stopped reponding. its not even getting switched on. plz guide what to do now

  • vaibhav

    throw it in ur dustbin…its dead now..

  • adawg

    does this jailbreak bypass the activation?

  • Eddie Van Halen

    This works AWESOME. I guess the key (for those who are having problems) would be to FOLLOW THE INSTRUCTIONS!

  • poohoop

    ‘panic: we are hanging here…’

    this message showed up and it’s stuck there forever! :( What do i do now?

  • Sam

    after i jailbreak,my Cydia downloaded half way and it say success but when i reboot it, it does not appear at my home screen,pls help.thanks

  • Nina

    Tried doing it but has been stuck on a black screen with white writing for about 10 mintutes. Is this normal?

  • seksotik

    when the iPhone reboots, it changes the apple logo into the greenpois0n skeleton-like logo. is there a way to revert this back to the original iPhone logo?

    please help. thanks.

  • mfrack

    im jailbreaking my iphone 4 and its showing text on the screen and has stopped at the following message!

    failed to get AppleS5L8920ZARM7M

    ANY ADVICE

  • kzz

    how about version 4.2.3 does it work?

  • kzz

    i mean version 4.3.2 does it work?

  • kev

    the black and wight coding will not go away

  • jus sum dude

    so i have the loader on screen but it won’t let me open it, nor will it let me delete it, help?

  • ABBY11

    i didnt get d loader thing on screen wat does it mean..?

  • cridgey1

    can anyone help just tried jailbreaking my 3gs and it says its complete but its not re-booting just got a load of white writing on my screen!!! please help!!!!

  • seid

    hi i just jailbrake my ipod using greenpois0n. and the loader come on the screen. but when i press it it won’t open. so if you guys help me out on what do i do. thax

  • iphonelady

    hi how long after the script runs down the iphone screen should the reboot happen? i get to that black screen and then it just stays there

  • chloe

    hi, i jailbreaked, everything was succesful till the verbose screen part, waited for about 5mins and nothing really happen, do i wait longer or what?

    thanks

  • r4u

    tried using greenpois0n after jailbreak done, couldn’t get any loader app. or folder… tried 2-3 times…????

  • Karla

    Heelp!

    My iPhone is currently on verbose mode and it’s scrolling reeeeaaal slow. The last line says “Failed to get AppleYADAYADA after 1090 sec.” What will I do? It’s been like this for more than 10 mins or so. Is this normal? I tried rebooting it manually and it does nothing. It’s stuck on verbose mode. Help. :(

    • zayd

      is ur iphone working now…..? mine is at 970 sec. What to do next

  • zayd

    my iphone is showing text in verbose mode……since last 10 minutes and jailbreak is complete…..what shud i do….?

  • D

    I keep getting, “Failed to get AppleS5L8920XARM7M after 1 0 sec.” Can anyone tell me what is going on?

  • hani

    my iphone 4g software is 4.3.5 is there any jailbreak for it ?regards

  • Wei Quan

    Can it be turn off after jailbreak

  • Dani

    It took FOREVER for my iphone 3gs to reboot…

  • JDz

    Umm my phone is stuck on a black screen with all these words and stuff on it. Help?

  • JDz

    Stuck on verbose mode I will say to be simple.

  • DanMc

    Will this work for a IPhone 3GS using IOs 4.2.1 and firmware 05.15.04? Just wanted to make sure before I do this?

  • Help

    Hi , I`m new to this jailbreaking thing so I wanna ask .. Am I still able to sync my stuff with iTunes ?

  • Cymon

    My iphone is stuck on the verbose words, and it has not rebooted yet! How long does it take?

  • EllaaA

    does jailbreak unlocks and make any SIM card of any contry to work or have to do another thing……..

  • kalim khan

    My iPhone 3gs is stuck on the page where text is in verbose mode scrolling on my iPhone screen! Its been like this for the past 15-20 mins! Any help?

  • oscar

    umm i have a 5.0.1 redsnow jailbreak, do u have to restore before going in a greenpoison 5.0.1 jailbreak? please respond…

  • peter

    i need help
    i am using iPhone 3g firmware 05.15.04 and my version 4.2.1 (8c148)
    i need to jailbreak it but i don’t know which one i can download it i can only see for iPhone 4, iPhone 3GS
    thanks for helping

  • Mrj Bahamas

    Hi there. I have an iphone 3g 8gb with the 4.2.1. I went onto the link you provided to dwonload the software. You mentioned that there would be a windows icon to download the greenpoison. I did not see a windows icon but only this:

    Absinthe v2.0.4 (Win) at the topright. I clicked on it and downloaded the app. After i ran it on my pc, it appears as absinthe which i assume is the green poison based on the graphic of the apple. When i open it it doesnt look like the window in your example. but comes up as Chronic dev Absinthe. when i connect my iphone to my pc, it says “sorry, the attached device is not supported”. Please help me.