iPhone Dev Team Releases Ultrasn0w 1.1-1 To Improve Battery Life

Unlock iPhone 4

Last week, iPhone Dev Team had released Ultrasn0w 1.0-1 making it the first software solution to unlock iPhone 4.

It has been extremely popular as more than 750,000 iPhone users have already used it to unlocked their iPhone.

Dev Team have just released an updated version of Ultrasn0w – Ultrasn0w 1.1-1 to improve standby battery life.

iPhone Dev Team announced the new version of Ultrasn0w via Twitter:

ultrasn0w upgraded to version 1.1-1 we've tweaked a few things that may help with standby battery life, you can upgrade via Cydia.

Ultrasn0w 1.1-1 can be installed from Cydia by iPhone 3G, iPhone 3GS and iPhone 4 users to unlock their iPhone on iOS 4 or iOS 4.0.1 or earlier (upto iPhone OS 3.0).

Here are the steps that you can follow:

  1. Launch Cydia

  2. Please add the repo repo666.ultrasn0w.com to Cydia.  That last “o” is actually the number zero “0”. If you use the letter “o” you’ll get an error.

  3. Then search for ‘ultrasn0w’ in Cydia and install ultrasn0w. This should successfully unlock your iPhone.

  4. T-Mobile USA users should disable 3G before using ultrasn0w.

If you’ve already installed Ultrasn0w then launch Cydia and tap on changes to install the updated version.

Ultrasn0w 1.1-1 will also work with iOS 4.0.2 as it does not include a baseband update but it is meaningless at as now for iPhone 3GS and iPhone 4 users as currently there is no solution to jailbreak iPhone 3GS or iPhone 4.

Luckily, iPhone 3G users and iPod Touch 2nd generation (non-MC version) can use Redsn0w (v0.9.5b5-5) to jailbreak iOS 4.0.2. If you need help, you can checkout our step-by-step guide on how to jailbreaking iOS 4.0.2 using Redsn0w:

As always, let us know how it goes.

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  • Noneya

    Sounds Good.

  • Max

    thanks dev team


  • What?

    "there is no solution to jailbreak iPhone 3GS or iPhone 4."

  • For iOS 4.0.2

  • Aaa

    It has also fixed a voicemail issue for me!

  • TurtleBite

    Hello guys, anyone knows if the team is going to release the pwnage tool for the iphone 4?.

  • Warbird

    I see there are already jailbreaks for iPhone 3G/GS IOS 4.0.2 BUT is anyone working on the JAILBREAK for the iPhone 4? The 3G/GS jailbreak 'DOES NOT' work on the 4.

  • wolverinemarky

    as of right now the web address jailbreak is the only one their will be for now

  • iP4

    does anybody know if MMS fixed? previous version of Ultrasn0w broke mms on my iphone4

  • Meidas

    Thank you, thank you, thank you..!!! Dev Team guys rock 🙂

  • Hey guys, do you have any idea if there is another way to hactivate you iPhone 4? not via the method that uses phonebook sim cards…they don't sell them where I live…any ideas?

  • Help

    I updated ultrasn0w 1.1-1 and my iPhone 3gs 4.0.1 is locked now. Before update everything was fine. Can some one help me?

  • fscott@fscott.com

    Could someone please explain what Comex might have been thinking in releasing his source code into the wild where malware developers will surly exploit it?
    This guy is so smart, to do the cracks, yet puts everyone at risk. Why?

  • me

    then therefore, this is not true:

    "Ultrasn0w 1.1-1 will also work with iOS 4.0.2 as it does not include a baseband update "

  • P_NY

    @Adipekar use an AT&T sim card if it is for the iPhone 4 it will help you to get out from the emergency call screen the put the T-mobile sim (is u gonna use it with tmmobile and the phone will activate

    Hope this help

  • kchawk05@gmail.com

    Is there going to be a fix for facetime for Tmobile? Mine says waiting for activation. Please help!

  • TurtleBite

    Yes wolver, but i restored to the 4.0.1 and i dont have the att micro sim, so i cant activate the phone. With redsnow i used to jailbreak and active the 3gs all in one step with no need to carry a sim.

  • TurtleBite

    Yes, you can get an att micro sim at ebay for 3 dollars plus shipping. I did that since redsnow is not compatible with the iphone 4 firmware.

  • Mk

    u can go to att shop and by att micro sim card for 29.99

  • hxclos

    Read it again. iPhone 3G and iPod Touch 2nd generation (non-MC version) users can use Redsn0w to jailbreak 4.0.2 and use Ultrasn0w to unlock

  • ilikeflops@gmail.com

    I keep getting a "no sim installed" error when I try to insert my tmobile sim. I have an Iphone 4 OS4.0.1 it has been activated, jailbroken and I installed Ultrasnow 1.1-1. Do you know how to solve the error I am getting?

  • HELP

    I am the same as you except on 3.1.3 with the 4.0.1 baseband. Cydia offered an update for my ultrasn0w and I trusted it now my phone can't get signal. Help PLEASE someone!

  • Gaas

    I had the same problem with 3GS 4.0.1 when updated ultrasn0w to 1.1-1, I reinstalled, when the process ended I turn off the iPhone end after turn it on and voilà I got a signal.

  • Alyssa

    Worked great, the only thing I would clarify, just to be specific….make sure your IPhone 3G is updated to the new 4.0.2 firmware using ITunes, & then continue with this tutorial. I originally thought, because it was telling me to download both the 4.0 & 4.0.2 from a link, that I shouldn't update my old software using ITunes. But that's not the case. Download them both after the ITunes update. Thank you for this, & it worked great!! 🙂

  • ojb

    Just go to jailbreakme.com and you will be able to unlock again your iphone, turn your wifi on and go to your safari browser and then type in http://www.jailbreakme.com but before you do that you need to go to setting and clear history, cookies,cache and then go back to the main screen and start that procedure.

  • Andrew

    Anyone having problems with visual voicemail after installing ultrasn0w? everytime I go to my voicemail in the phone app it calls my voicemail number instead of showing the visual screen.

  • laurrennn@yahoo.com

    I installed everything as directed, selected 'Carrier' under the 'Settings' icon on the main screen, and the only two options it is giving me is AT&T and T-Mobile. I have Verizon, please help!

  • The only 2 carriers that I know of that work are ATT and Tmobile. From what I understand, Sprint, Verizon use CDMA – not GSM. So they are not able to be used on the current versions of the iphone. Maybe in 6 months?
    I have some info on my blog: http://rantd.blogspot.com/

  • saya

    is there any problem if i unlock iphone while i am with att i am a naive with iphone…:D

  • Wande Ogunlusi

    I will recommend dis website 2 anybdy, u guys r awesome follow the instructions and jailbroke and unlockd my iphone

  • AJ

    thanks to the dev team

  • T

    Before we start into the tutorial to unlock iPhone 4 I want to start by explain what unlocking actually is. Unlocking is the removal of SIM restrictions on your iPhone so that you can use any carrier you want. This is what most people want to be able to do as it can save them a great deal of money on their monthly bills. It also means that you can continue to use the service provider that you are currently using. With that out of the way, let’s move on to this step by step Unlock iPhone 4 tutorial.
    Ultrasn0w is a very popular application for unlocking iPhones and it has been updated so that you can now unlock iPhone 4. This is great news and it means that you can now use your iPhone with any carrier you choose. The latest version of ultrasn0w has the support for the carrier unlock for iPhone 4 with a baseband 01,59.00 as well as 3G and 3GS models on baseband 04.26.08, 05.11.07, 05.12.01 and 05.13.04.
    The first thing that any iPhone 4 user is going to have to do is jailbreak their iPhone. There are a number of ways taht you can do this. Once you have jailbroken your iPhone you can follow the step by step tutorial below.

    Step 1: The first step to unlock iPhone 4 is to launch the Cydia application on your iPhone. Once the application opens you will then need to hit the search button and type in ultrasn0w. When this has been found you should hit install so that ultrasn0w can be installed on your device.

    If ultrasn0w doesn’t show up when you type it into the search button you will need to follow the remainder of the steps in this tutorial. If you were lucky enough for it to show up you are almost finished and all you have to do is turn off your iPhone, turn it back on and hey presto you have been able to unlock iPhone 4.

    Step 2:
    When Cydia has launched you need to hit the manage button and then select sources. You will then need to hit the edit button and then the add button.

    Step 3:
    In the box that appears where you are asked to enter Cydia/APT URL you will need to type in http://repo666.ultrasn0w.com and then click the add source button. Cydia will then verify the URL that you have typed and then register the repository URL. When this has finished all you have to do is hit the return to Cydia to continue with the unlocking process.

    Step 4: You should now have the new URL registered so all you have to do is hit the done button. You will now be able to find the ultrasn0w application and this will automatically unlock iPhone 4. The next step in this process is to turn off your device.

    Step 5: Turn back on your device and the ultrasn0w application will now begin the unlock iPhone 4 process. You will now be able to use your iPhone 4 with any carrier you choose.

    complete instructions iphone unlock tips and tricks
    How to Select an iPhone Unlock/Jailbreak
    How to End Task or Force Quit an iPhone Application
    How to Fix Push Notifications on 3.0 iPhone 2G
    How to Capture iPhone 3GS iBEC and iBSS (Mac)
    How to Capture iPhone 3GS iBEC and iBSS (Windows)
    How to Put an iPhone Into DFU Mode
    How to Jailbreak Your iPhone 3G on OS 3.0.x by RedSn0w (Windows)
    How to Organize Your iPhone Apps Using Movement
    How to Show Battery Percentage on Your iPhone
    How to Use Voice Control on Your iPhone
    How to Record Video With iPhone
    How to Copy and Paste on the iPhone
    How to Create iPhone Voice Memos


    hi every one specially to i4 team i am very new in this field, but u guy hv done unblevible work, its so easy for us to unlock & jail break using greenpoision
    i just to say thanks & good jop & well done
    my very expenses paper weight now become very usefull for me



    I HAVE IPHONE 4 4.1 BASE BAND 1.59


  • PC


    I’m im Mozambique (Africa), I have unlocked iPhone 3G, 04.26.08 baseband, it’s working nice and I love it. I have Cydia installed on it with ultrasn0w 1.1-1. I want to upgrade to OS 4.0 or higher version, what can I do? anyone can help me please?


  • axiliado@yahoo.com

    thanks to the dev team
    I have iphone 3g OS 4.1 and turned off 3g and installed
    ultrasn0w 1.1.1 and iphone keeps shutting on and off and it won't get a signal for tmobile after a while it will turn on but no signal at all need HELP!

  • Dj Raffer

    Can someone pls help, i have a T-Mobile iphone 3g from Holland, i was able to jailbreak it with redsnow, runing ios 4. But i am finding it hard to unlock it with ultrasn0w, so i can use my 02 sim card. I need help pls.

  • alfonso

    I have an iphone 4 with firmware version 4.1 installed in it. I jailbraked it no problems but i cant fint any solution to unlock it. Is it possible?

  • Calvin

    Hi all

    Can the Ultrasn0w 1.1-1 unlock iPhone 4 with iOS 4.1? Thanks.


  • RRS

    Thank you for the magic!!! I could jailbreak my 3G for the second time, now with 4.1. Then unlocked it with Ultrasn0w. Very good they warn you to look up your baseband (mine was 04.26.08) to make sure you can unlock it later.