How To: Unlock iPhone 4 Or iPhone 3GS On iOS 6 With UltraSn0w Fixer

Previously we showed you how to update to the iOS 6 firmware on your iPhone, while preserving your baseband. This is obviously only useful for unlockers who rely on a specific baseband version to maintain their unlock. For those of you who use UltraSn0w, you were probably disappointed that is has not yet been updated for iOS 6 compatibility.

UltraSn0w Fixer For iOS 6

If you have been unlocking with UltraSn0w for some time now, you probably have gotten used to the fact that UltraSn0w updates can often times take weeks, if not months. As such, to tide you over until the official UltraSn0w for iOS 6 release, a package called UltraSn0w Fixer was created that will make UltraSn0w function on the iOS 6 firmware generation.

UltraSn0w Fixer for iOS 6 works on the Jailbroken iPhone 4 or iPhone 3GS with one of the following baseband versions – 01.59.00, 04.26.08, 05.11.07, 05.13.01, 05.12.01 or 06.15.00.

Unlock iOS 6 With UltraSn0w Fixer

Step 1) – The first thing you will need to do is Jailbreak your iPhone 4 or iPhone 3GS on the iOS 6 firmware. For instructions on how to do this click here.

Step 2) – Now launch Cydia from your SpringBoard (homescreen), go into the Manage tab, Sources section, tap the Edit button and then the Add button. You will need to add the iparelhos repository:

Step 3) – With the iparelhos repository added, you will now need to install the official version of UltraSn0w. That is right, you are not going to install UltraSn0w Fixer for iOS 6 first, but rather the official version of UltraSn0w.

Step 4) – Once UltraSn0w has been installed, now you will need to install UltraSn0w Fixer for iOS 6 to your iPhone.

With both UltraSn0w and UltraSn0w Fixer for iOS 6 installed you should have an unlocked iPhone 4 or iPhone 3GS. Congrats! If you have any further questions or thoughts please turn your attention to the comments section below.

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  • AmiR

    what about 4.12.01 baseband unlock of iphone 4 ?

  • Trololololo

    What situation is with iPhone 3GS with downgraded bb from ipad to 05.13.04 ?

  • jseals1984

    I was running the 6.15 BB, updated my iphone VIA itunes on 5.1.1. after downgrading from the 6.15 to 5.13.04. Now i am on IOS6 no JB and yet i can use my striaght talk sim card in my 3GS. But when i first bought the 3gs it was locked to apple. I never paid to have a factory unlock done. Does anyone know how i have a unlocked 3gs with no JB?

  • sergio

    i have a iphone 4 gsm and i have done a factory restore, now i dont have a SIM from original carrier to make the activation? help

  • TwistedTrojan

    what about 04.12.02 baseband iphone 4

  • fatahxp

    please release ultrasn0w for unlock iphone 4 BB 04.12.01!

  • Mohammad Bagheri

    thanks very much
    but i have a problem
    i can’t add source because when i push add source buttom on cydia, i have gave an error that tell me request timed out
    please help me

  • Spike

    What about 4.12.02 baseband unlock for iphone 4??? :-(

  • Chris Wehan

    iphone 3gs baseband 06.15.00 not unlocking…ive tried ultrasnow fixer just as described above but still nothing happens

  • ngurah

    jailbreak with redsn0w and then delete from itools aplication (search at google)

  • ngurah

    use Sim Gevey.. i think it is the best way..

  • Dawid Kaliski

    did u have already unlocked your sim in 3gs 06.15.00 ?

  • Livrej Vohn Azerud

    is there no other way to unlock iphone 3gs BB 06.15.00?..

  • sergio

    i have done that 2 days ago, but thanks!

  • Jamie Tilden

    Once I’ve done this, can I restore my phone and will it still be unlocked? Or do I have to remain jailbroken.

  • vj

    y ppl r so dum if u dont know what r u doing then dont F**** with ur iphone

    k if u download this ultrasn0w fixier but u need to download the fixier plus the ultrasn0w too not just one file u need bothfile

  • Fabio Petrini

    and 5.16.07 ?

  • aimhee

    it doesnt work on iphone 3gs ipad BB.. help anyone? :(

  • aimhee

    YEY! fixed it! downgrade ipad BB to 05.14.03 using redsnow 9.15b2.. install ultrasn0w and ultrasn0w fixer. and don’t forget to boot tethered! :)

  • aspirein

    I have done the unlocking , phone got unlocked but still after rebooting it is getting locked and cydia not working after that, To make it work I had to do tethered reboot using redsnow, I am afraid my phone switches off because of low battery and I have restart it some time once again I will have same problem

  • dan

    anyone looking to get your att iphone unlocked cheap? message me for details,

  • brandon johnson

    it wont let me install the fixer when i go in there to install

  • Mohamed

    Merci :) it works 100/100 thanks alot :)

  • Mêvan Zêwkî

    my device was in ios 4 , and i updated it to ios 6 , can i downgrade it to ios 5 or 4 ???
    i need help PLZ

  • diana

    hey, did you get to solve the issue? i seem to have the same issue…

  • diana

    ok so i did all that and it still says no service.. i have the iphone 3gs version 10A403 ios 6.0 and 06.15.00 firmware.. is there anything else i can do to unlock it?

  • Daniel

    Hey guys I can’t seem to find the “official version ofUltraSn0w” to download? I can only seem to find “UltraSn0w Fixer for iOS 6 to your iPhone.” But it says I need to download the official version first?

  • Jerry

    I have 3gs with 06.15.00 bb and is not work :( anybody help?

  • rizal

    still lock my iphone 3gs

  • ethan

    can someone release baseband 4.12.02 for iphone 4 we need serious help

  • tohid

    what about 04.12.02 baseband iphone 4 plzzzzz help – ultra sonw ?

  • Joy

    are u really the prophet?

  • Joy

    you got lucky :D.. at&t sometimes unlock imei when they are more than 2 years old, provided their payment is cleared

  • issa

    is it coming any iphone 4 unlock for baseband 04.12.02 or is there allready one ?

  • Domie

    thanks a lot! work for me my baseband is 4.12.02

  • smokee

    I have An iphone 3GS on IOS 6.0.1. it is jailbroken and cydia installed. Its running on baseband 05.16.07 on at&t and i want to know if i can make it usable for family mobile (T-mobile)

  • Sandy M. Ramos


  • how?


  • ratha

    how to unlock iphone 4 ios 6.0.1 baseband 04.12.02?

  • ratha

    i have iphone 5 from USA now i can’t use it how to solution it! suggest…..

  • Nixo

    Hi,goto search on cydia and look for “ultrasn0w”. once seen,install it and then comback to iparelhos to install the ultrasn0w Fixer.Gudlock

  • Alvin

    How did you do it?

  • iphonelover

    i am not getting ultrasn0w fixer for 6.0 in my cydia. what do i do?only 6.0.1 and 6.1 is there. i have tried 6.0.1 but its not working.

  • Darshit patel

    its not working in 6.1.0 or ios6 with only two ultrasnow and fixer
    whats a next process????

  • emrah karatay

    download ipad baseband and no problem

  • richard sanico

    my iphone4 japan lock ios 6.1.3 baseband 03.10.01 how to unlock

  • richard sanico

    how to unlock my iphone4 ios 6.1.3 baseband 03.10.01 japan lock plzz help