How To: Unlock iPhone 3GS (04.26.08 – 06.15.00) On iOS 5 Using UltraSn0w 1.2.4

On October 14, 2011, by Jaden

If you are hoping to unlock your iPhone 3GS on the official iOS 5 firmware you are in luck. The Dev-Team have released a new version of UltraSn0w (UltraSn0w 1.2.4) which supports unlocking the following basebands:

  • 4.26.08
  • 05.11.07
  • 05.12.01
  • 05.13.04
  • 06.15.00  (Special iPad Baseband)

To find out if you have one of the basebands specified above you will need to go into the Settings.app > General > About and look for the Modem Firmware field. If your iPhone 3GS is running one of the baseband specified above you can successfully unlock your iPhone 3GS on the official iOS 5 firmware. Continue following the how to guide below to learn how to unlock your iPhone 3GS on iOS 5.

Note: In order to update to the official iOS 5 firmware and still preserve your baseband so it is unlockable, you will need to follow our in-depth how to guide by clicking here. DO NOT under any circumstance update to iOS 5 or you will update your baseband in the process. You will need to create a custom IPSW through RedSn0w or Sn0wBreeze (click here for more info).

Unlock the iPhone 3GS on the official iOS 5 firmware

Step 1) - As we noted above you must already be running the official iOS 5 firmware on your iPhone 3GS (click here if you are not), and you must also be jailbroken on iOS 5. If your iPhone 3GS is not jailbroken please click here.

Step 2) - After your iPhone 3GS is running the official iOS 5 firmware and is jailbroken you will need to simply launch Cydia from your SpringBoard.

Step 3) - Once Cydia is up and running you will need to go into the Sources page. To go into the Sources page tap Manage followed by Sources.

Step 4) - Typically, the UltraSn0w repo is included with Cydia. If not, tap the Edit button followed by the Add button and you will be prompted to add a URL source. Type:

http://repo666.ultrasn0w.com

Followed by tapping the Add Source button.

Step 5) - Cydia will automatically refresh and update sources.

Step 6) - After Cydia is done refreshing sources. Tap the Search tab on the bottom tab bar and search for UltraSn0w. Once UltraSn0w appears, tap on it and you should see version 1.2.4. Read through the description and tap the install button to install UltraSn0w 1.2.4 to your iPhone 3GS running iOS 5.

Note: In case you are not familiar with UltraSn0w, it is a software unlock for your iPhone 3GS meaning you can use your iPhone 3GS with any carrier by simply inserting the SIM card.

Step 7) - When UltraSn0w is installed you must restart your iPhone 3GS and run RedSn0w to boot tethered, you’re done!

Your iPhone 3GS should now be fully unlocked running iOS 5. Let us know if you have any questions in the comment section below…


← Older Comments
  • Bhubiz

    I have 3Gs 5.0.1 BB 06.15.00 and New Bootrom (serial: xx1293xxxxx )….I have jailbroken it with redsn0w 09.10b5. Installed UltraSn0w 1.2.5 but all i get is searching……. 
    Please Help !!!!!!!!!!!!!

  • Bhubiz

    You are funny..Redsn0w is not on cydia nor an iphone app. It is a software for windows/mac to jaibreak iphones (installing cydia). to download redsn0w the link is given at the top of this tutorial

  • Guest

    thanks a lot manu…. ur awesome!!

  • Qaisar

    hi bro..
    I bought an unlocked & jailbroken iphone and i upgrade cydia my is stuck on apple logo and when i connect with itunes ,,,,restore msg come on screen
    help me what can i doo´………

  • qaisar

    hi bro..
    I bought an unlocked & jailbroken iphone and i upgrade cydia..my iphone 3gs is stuck on apple logo and when i connect with itunes ,,,,restore msg come on screen
    help me what can i doo´………

  • Dan

     Hi, can somebody please confirm if untethered jailbreak/unlock on iOS5 will work with a 3gS with new bootrom?  No problems?

  • Pradeep Ghorpade

    Hi I have iphone 3gs wiht 4.2.1+new bootroom +baseband 6.15.0. I want to upgrade iphone to iso 5.0.1. Can you help how to proceed it and any link that i can refer it. I want to preserve my bb 6.15.00

  • http://www.facebook.com/people/Elizabeth-Maples/1226545200 Elizabeth Maples

     I have
    a question. I used Redsn0w to jail break and then used ultrasnow, I have  the cydia icon but when I try and add
    repo666.ultrasn0w.com nothing happens, do you have any suggestions?  Lizandjaime@aol.com

  • hiberjunior

    i have the same. someone else? 

  • Behappy_positive

    this is my 6th day i m trying to unlock. i googled/ you tube(ed) ,everything i did, restored ipsw more than 10 times. still i m not able to uunlock and being tired and bored and upset i m typing this comment. plz plz plz help me. shittt!! why did i update to ios 5.1 ( on my 3gs) i m regreting. before it was fine…….. if any soln then plz let me know @   behappy_positive@yahoo:disqus .com . 
    kiran basnet
    Nepal
    +977-9804081627

  • Alhammadi

    your steps is really useful thank you so much

  • Mariajo2016

    i have an iPhone 3Gs on the official iOS 5 with 06.15.00 baseband, i did all teh steps above and it didn’t work. my iPhone continues been without service.. Is there any other thing i can make?

  • Jaideeps52

    we can reboot our device

  • waleed

    i updated my iphone 3gs from ios 4.1 to 5.0.1,preserved the baseband 06.15.00, installed ultrasn0w from cydia n i dont get any service it says no service….so shall i refresh the baseband 06.15.00 from redsnow b3 by unticking install cydia and ticking install ipad baseband?? if yes then plz tell me that there is no risk in doing tha

  • Thomas A

    Hi Apple mode is 05.16.05. it is not working please help me

  • MOHAMMED SHAHRUKHYBK

    HOW TO THETHERD JAILBREAK I PHONE 3GS IOS 5.0.1

  • MOHAMMEDSHAHRUKHYBK

    HOW TO FIX NO WIFI NO IMEI NO BLUTOOTH IN I PHONE 3GS

  • SacredPixel

     Thanks, It worked perfectly! :)

  • Kiran John73

    is it compulsory that your iphone should be tethered.

  • STEEEEEVE

    doees this work on ios 5.1???? somebody pleez tell me

  • masked mamba

    tried this and now I’m back at the activate screen, can’t even get into springboard

  • Mukku Mobile

    not working on my iphone 3gs ios 5.1

  • pieman67

    hi im new to all this iphone stuff i have a 3gs locked to 02 uk i have managed to jailbreak using ulltrasnow can it be unlocked im using ios5 and have modem firmware 05.16.05 thanx in advance

  • Krock327

    so i know have a 3gs with 5.1 and 06.15.00 on it. used redsnow per instructionsand also ultrasnow.  it just searches and searches for hours, any advice?  and trying to used redsnow to reinstall the ipad baseband doesnt work, it says watch for a future release, any advice on how to get this thing to read a diff sim

  • Ivoka1981

    Hello.  I have the same problem as your :(
    Have you managed to sort it out?

    Thanx!

  • Ivoka1981

    hello.
    Could you send the for my 3GS cause i cannot find it and download it?
    Thank you in advance!

  • http://profile.yahoo.com/HSMP5ZBBKFGDMSG5FL6PLQN5BA Dhaval

    is iOS 5 can be updated on iphone 3G with BB 6.15, currently running on 4.2.1 but very slow

  • Ivoka1981

    Hi.  Dont do it! You will get your phone damaged! Believe me I have already did this misstake  :/  

  • Jordanx38

    i downloaded ultrasn0w 1.2.5 on 06.15.00 but it still says no service. what should i do

  • Sjl_santos9

    please help me i follow the instructions still i got no service

  • Sjl_santos9

    3gs 5.0.1 baseband 6.15

  • Testclicktest

    I have iPhone 3GS running OS Version 4.1 (8B117) and modem firmware 06.15.00

    I am not sure whether this is hardware issue or a software, but my prepaid card network works with Idea, Cellone, vodafone only and other subscribers like Airtel, Uninor, Aircel, Videocon shows No Service – so these cards do not work with my iphone.

    Any idea or clue? What can be done to resolve said issue?

    Thanks in advance :)

  • http://www.ArenaSocial.com/ iPhone Application Development

    Its showing some bugs, please provide more details.

  • Gwava_oz

    I have an iphone 3gs jailbroken and unlocked using 6.15.00 ipad baseband.  I used redsn0w 0.9.9b6 to jailbreak.  I’m wondering if I can rejailbreak with a newer version of redsn0w because I have read that the newer versions have fixed the battery issue.  I’m having a lot of trouble with my battery.  I tried upgrading to 5.0.1 and I wasn’t able to do it, I think I was using the wrong IPSW files.  I don’t even need to upgrade to 5.0.1.  I would just like to fix my battery problem.  Thanks.

  • Unforgiven_sin2050

    yes you will have to downgrade your iphone on 4.1 then it will ok.

  • Twenty_8

    how to unlock iPhone 3Gs 5.1 on ultrasnow?????????

  • Deano7386

    yes 5 days later and it works you gota download ipad basebane aswell for 1phone 3gs 06.15.00 thankyou

  • Amitship

    hi 
    3GS – 5.1.1(9B206) – Baseband 6.15.00 + ultrasn0w .
    service also coming but in case i switch off the off then restarting its showing only apple logo so i need to 
    run RedSn0w to boot tethered then its become ok again and showing everything .. pls help me where i am doing mistake so that no need to boot in case of switch on after switch offthanks 

  • Martaka

    Seems, that Apple has blocked this option somehow?

  • Gerhardg Groenewold

    Hi, i have a iphone 3gs ios 5.1 and baseband 06.15.00 jailbroken on redsnow.
    I tryed ultrasnow and ultrasnow fixer for 5.1.
    on the display it says no service.
    what can i do more, please help

← Older Comments

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