Untethered Jailbreak For iPhone 4, iPhone 3GS (Newer Bootrom) And iPod Touch 4G On iOS 4.2.1 Coming Soon

Jailbreak iOS 4 on iPhone 3GS

MuscleNerd of the iPhone Dev Team has revealed that he has managed to get untethered jailbreak to work on iOS 4.2.1.

This is good news for users who own an iPhone 4/iPad/iPod Touch 4G/iPhone 3GS (with new bootrom) as currently Redsn0w and PwnageTool for iOS 4.2.1 can jailbreak newer iDevices on iOS 4.2.1 but it is tethered. iPhone 3G and iPhone 3GS (older bootrom) users are the lucky ones to enjoy an untethered jailbreak.MuscleNerd tweeted the news:

Got “backup plan” for untethered 4.2.1 JB working (video coming up). Uses mysterious 4.2b3 hashes Cydia kept for you

(It’s a “backup plan” because comex is working on a more extensible one, but this method is also generalizable)

ipt4g 4.2.1 untethered JB w/4.2b3 kernel: http://is.gd/inE4e … Wastes no exploits, but upcoming @comex JB maybe better

So what does ‘tethered jailbreak’ mean?

Tethered means that the jailbreak needs to be reapplied every time you power down your jailbroken iDevice. If you let the battery run out or restart your iDevice then you will need to reapply the jailbreak by connecting to your computer (tethering).

The only hitch that we see with this method is it needs iOS 4.2 beta 3 SHSH blobs.

He has also published the video of untethered jailbroken iPod touch 4G:

MuscleNerd hasn’t provided an ETA on when the updated tools will be released.

As always, we will let you know as soon as it is released so stay tuned here at iPhone Hacks or follow us on Twitter or subscribe to our RSS feed.

Have you been waiting for a untethered jailbreak for iOS 4.2.1? Do you have iOS 4.2 beta 3 SHSH blobs saved via Cydia. Tell us in the comments section below.

[via Twitter]

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  • not so savvy

    Well done to mscnd I’m still gonna wait for comex to do his magic I’ve not updated yet as I am happy with current fw

    • iURLas

      ditto here… 4.2.1 does not add any new functionality to the iPhone 4. keep up the good work comex, MuscleNerd and the rest of the dev team.

    • Mitch

      How would comex’s jailbreak be different than dev’s? Honest question.

    • Tomsiphone

      Good deal. But, will the new JB preserve the baseband? I am currently on 5.11.07 and, although I would like the new features of 4.2.1, I don’t want to lose the unlockable baseband. Nor do I want to go to the iPad baseband.

      Just wondering….good work Dev Team

  • Grime

    What about an unlock for the newer bootrom iphone 4?

    • Aza

      This is about jailbreak stupid, not about unlock!!

  • Joker

    Who carez bout the jailbreak!!! Wheres the ultrasn0w for the iPhone 4 unlock??? Its been way too long!

    • Jason

      U should have pre-orded yours like everyone else…
      Running 4.1 JB/Unlocked simpleMobile ;-)

    • Tomsiphone

      First, you have to jailbreak in order to unlock. And FOR FREE, where are your manners. Either wait or get a factory unlocked phone. Geeezzzz!!!

  • nhimconboyz

    FW 4.1 BB 6.15.00 in win7, how can i upgrade FW 4.2.1 … ??? ( cant use sn0wbreeze )

  • Jason

    Unless you have a printer that supports it or airplay, theirs no other reason to upgrade to 4.2 imho

  • DevteamSuckz

    Hurry up with the unlock dev team. You guys are a joke. Too many delays and taking too long. Work harder.

    • Jason

      U got some mouth on you, I’ve never seen any of YOUR releases. Y don’t u roll up your f’n sleeves and release your own stuff wizard? Otherwise STFU and wait patiently.

      • JasonIsGay

        How about i release my cum on your mouth you fawken dumb sh!t

    • Bruce

      Would you rather them release some buggy garbage may brick your phone, or something that’s tested sufficiently and mostly safe?

    • ur_A_dBag_DevteamSuckz

      STFU dbag. if it wasnt for people like this, u would still be using a crappy non jailbroken iphone, too bad u cant unlock it… the world is now over cuz u cry too much

    • cbryan28

      Wow, someone is obviously a spoiled little bitch!

  • jailbroken iP4& on 4.1

    Just in case i decide to upgrade to the 4.2.1 or the soon rumored 4.3 by Apple, i was wondering how to keep all my cracked apps? Is that in any way possible??? I’d welcome brilliant/technical ideas on this matter as this is my only dilemma w/ all these upgrading. It wud b sch a pain the ass to redownload everything all over again. Thanks guys!
    Btw, its good to hear that the all hackers are working on this together, & there’s conspicuos progress managing themselves in this maze of all d patching involved in this cat & mouse game of the JB world

    • http://none NojesOmega

      Go online and look for Cyder 2. It is like cydia for your computer. When I’m going in between jailbreaks. I download all the jailbreak apps I have on my idevice at the time. After you update just hook your idevice back up and put all your apps into Cydia Autoinstall and reboot. There are plenty of tutorials on youtube on how to use Cyder.

  • mkimid

    Apple stop to hash 4.2B3 from last night…

  • Borat

    Im pretty sure that was an iPod Touch in the video. The only thing im waiting for is an un-official bundle for my 3G, when will there be an ETA on that?

    • http://none NojesOmega

      you must have a new bootrom becuase there is one already out for old bootrom 3G

  • SRK

    Why does the iPhone 4 say “iPod” in the top corner?

    • http://none NojesOmega

      Because it is not an iPhone 4. It is an iPod touch 4G.

  • http://www.motorbeam.com/ fas

    Common hurry up the unlock.

  • Frank

    Guess u can’t read it say video is of iPod and iPods jailbreak just like ur iPhone

  • jd

    having the 4.2b3 shsh but not showing on cydia page but having it. It;s still available.

  • Chaz

    When will the unlock be released for iPhone 4 (4.1)??

  • Boss

    I request dev team,, please look into iphone 4 , 4.1 unlock.. Keep up good work,, u rock.

  • Aimy

    HI I want to know when is the iphone 4 4.1 unlocked? I have been waiting for so long. I hope it will release before Christmas. Thanks.

  • Mimizone

    I am still running 4.0 on my 4G. Great those guys will share a jb for 4.2.x. I’ve been looking forward to it to finally upgrade!

  • Alex

    Looking forward to it! Don’t let us wait too long!

  • http://www.youtube.com/watch?v=Cm6nEjjRkJ8 gio

    is it true about limesn0w? I’ve read it will be out soon and it can unlock iphone 4

  • Majk ivec

    Hello i am having problems. i have an iphone 3gs..with 4.2.1 firmware and then i tried updatin git to 6.15. now my phone doesnt boot it goes to apple screen and then to the one where you connect the usb cord to the itunes screen? im stuck, my phone wont start, i need help. i tried recboot to kick me out but that didnt do anything, but only kick me out of recboot.

    • Jeff

      put it in DFU mode (plug into pc hold home and power button for 10 seconds then release power button and continue to hold the home button fro 10 seconds then it should not do anything) then hold power and home button until u see the apple then just wait it should boot right up to home screen

  • http://www.cyclades.com Danny Kennedy

    I hope Dev-Team should be Release the Untethered Jailbreak For iPhone 4, iPhone 3GS (Newer Bootrom) And iPod Touch 4G On iOS 4.2.1 Soon.
    I having an Iphone 3gs already upgrade to ios 4.2.1 I am very tired Reboot device with USB connect to Computer. IOS 4.2.1 have a lot different and smoothly then ios 4.1.
    Thank you Dev-Team hard working

  • X

    same problem with majk ivec :S
    any1 can help?

  • Yoshy

    Keep up the good work guys!!! , I am really looking forward for the untethered jailbreak for the IOS 4.2.1 because I find the tethered jailbreak a little bit inconvenient however I am pretty sure that you guys are going to gives a Christmas present

  • forrest

    when will this be available on windows?

  • jamei

    whr te fcuk iss the jailbreak for 3gs nb

  • http://www.4syr.com NaWaR

    how soon …?

    and i have 2 iphones one iphone 4 and one 3gs iphone 4 is great and working with the tethered , but the 3gs not working at all .. i tried what ever to do it but nothing :( i can’t get cydia at all..

  • Mindovermatter

    I got me a 3GS new bootrom on 4.2.1. I have blobs for 4.0 – 4.1 on cydia. But looking toward a jailbrake. Don’t know why I updated I think I was just thinking about what do I Realy use in cydia and mostly nothing but to keep me pressing on my phone doing pointless crap. A application only gos so far the rest is in reality………

  • http://www.cyclades.com Danny Kennedy

    I am not happy now. I don’t have Mac but the tools can not using windows??????? now have to go back ios 4.1??

  • Dewa Pokok

    be patient..its been stated ‘tethered’..but u guys still want to jailbreak ur iphone using it..so?wat u guys expect?..if u guys cant stand it already to untethered ur 3gs n doesnt have Mac,use the Greenpoison or something else for the existing 4.2.1..for those who has been tethered using redsnow,then u have to be patient..thanks to Dev-team.IT IS FREE..wait for d 3gs untethered 4.2.1 release n for windows tools..its not juz us who using 3gs,its milion worldwide people who using 3gs also n have d same issue..so juz STFU n wait fool!..if u cant stand it,make ur own tools or software to untether ur outdated precious iphone..

  • gazza1888

    ok middle of january the info was you wont need the 4.2b3 blobs as dev team is currently working for a untethered jailbreak for 4.2.1 using the 4.1 shsh blobs, i saved them and now and didnt bother getting the 4.2b3 blobs, now its too late to get these blobs as they are no longer available and now dev team are planning to release untethered 4.2.1 using 4.2b3 blobs. I think they are that slow at releasing anything because really they dont know what they are doing, make your fucking minds up. heres a plan, retire and let geohot work it out. fucking retards.

  • bestman50

    I have an iPad here had it jailbroke with 3.2.2. I updated to 4.2.1 and would like to try redsn0w_mac0.9.7b6. do I need to do a tethered jailbeak first? Cydia should have my 3.2.2 shsh. I have copies of 4.2.1, 4.2b2, and 4.3b3 shsh on my computer. can anyone help me or point to a guide?

    thx bestman50

  • VTECKrr

    Ok. It has been almost 2 months. I’m waiting. Any news from pwnagetool? Don’t let us hanging.

  • John

    When is it coming out people come on really;(

  • http://youtube.com julian guzman

    its very cool

  • http://youtube.com julian guzman

    and you guys are doin very good at your job

  • http://Jailbreakme Doni

    Hi I like to jailbreak my iPod