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Download Ultrasn0w 1.2 to Unlock iPhone 3G/3GS on iOS 4.1/4.2.1

Finally! As promised, iPhone Dev-Team has released Ultrasn0w (v1.2) tool to unlock iOS 4.1/4.2.1 on iPhone 3GS and iPhone 3G. Ultrasn0w 1.2 can unlock 01.59.00 baseband on iPhone 4 and iPhone 3GS/3G basebands 04.26.08, 05.11.07, 05.12.01, 05.13.04 and 06.15.00.

Unlock 05.14.xx & 05.15.xx Basebands with Ultrasn0w:

If your iPhone 3G/3GS has 05.14.xx or 05.15.xx baseband, you can still unlock your device by first upgrading your baseband to 06.15.00 and then using Ultrasn0w 1.2 for the unlock. Download PwnageTool 4.1.3 from here and follow the step-by-step guide here to upgrade your iPhone 3GS/3G baseband to 06.15.00. Once done, skip the jailbreak methods below and jump straight to the unlock guide after the break.

Update: Instead of using PwnageTool 4.1.3, use Redsn0w 0.9.6b5 to update iPhone 3G/3GS baseband from 05.14/05.15 to 06.15.00. It don't require you to download iPad iOS 3.2.2 IPSW plus its available for both Windows and Mac OS X users.

Unlock iPhone 3G 3GS iOS 4.1 4.2.1 Download Ultrasn0w 1.2 to Unlock iPhone 3G/3GS on iOS 4.1/4.2.1

Before you may proceed to unlock, you can use the following tutorials to jailbreak your iPhone on iOS 4.1 or iOS 4.2.1. Once your iPhone is jailbroken, you can follow the step-by-step unlock guide after the break:

Jailbreak iOS 4.1 on iPhone 3GS & iPhone 3G:

You can jailbreak iOS 4.1 on iPhone 3GS and iPhone 3G by using the following tools:

Jailbreak iOS 4.2.1 on iPhone 3GS & iPhone 3G:

You can jailbreak iOS 4.2.1 on iPhone 3GS and iPhone 3G by using the following tools:

Unlock iPhone 3GS/3G on iOS 4.1/4.2.1 with Ultrasn0w:

  1. Open Cydia app on your jailbroken iPhone.
  2. Cydia Main Download Ultrasn0w 1.2 to Unlock iPhone 3G/3GS on iOS 4.1/4.2.1

  3. Tap on the Manage tab at the bottom followed by tap on Sources section
  4. Cydia Sources Download Ultrasn0w 1.2 to Unlock iPhone 3G/3GS on iOS 4.1/4.2.1

  5. Now tap on the Edit button on the top-right of Cydia and then tap on the Add button on the top-right. Enter http://repo666.ultrasn0w.com as Cydia/APT URL and tap on Add Source button.
  6. Ultrasn0w Repo Download Ultrasn0w 1.2 to Unlock iPhone 3G/3GS on iOS 4.1/4.2.1

  7. Now wait while Cydia downloads and updates its repository list
  8. Updating Repo Download Ultrasn0w 1.2 to Unlock iPhone 3G/3GS on iOS 4.1/4.2.1
    Reloading Data Download Ultrasn0w 1.2 to Unlock iPhone 3G/3GS on iOS 4.1/4.2.1

  9. Once you are done with adding Ultrasn0w repo, click on the Search tab at the bottom and type Ultrasn0w in the search field.
  10. Search Ultrasn0w Download Ultrasn0w 1.2 to Unlock iPhone 3G/3GS on iOS 4.1/4.2.1

  11. Tap on Install button on the top-right to install Ultrasn0w unlock on your device.
  12. Install Ultrasn0w Download Ultrasn0w 1.2 to Unlock iPhone 3G/3GS on iOS 4.1/4.2.1

  13. Reboot your device once installation has been completed.

Thats it, now you can use your iPhone 3GS or iPhone 3G on any unofficial GSM or 3G carrier around the world. Cheers!

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49 comments
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  •  
    mirtho francois3 months, 4 weeks ago

    Thanks veryyyyy much

  •  
    abigail12 months ago

    pls help i keep on gettin usb communication problem when ma phone is about jailbreaking. ave tried different ports, restarted the computer, turned off the virus guard ba to no avail. pls help

  •  
    Arte1 year ago

    God, you make it so easy. I feel like a hacker now. :3

  •  
    Fatman1 year ago

    Thanks :) working like hell :p 

  •  
    ws1 year, 3 months ago

    OMG thank you so so so so so so soooo much..i never thought it would work. you are brilliant. thanks again

  •  
    AG1 year, 4 months ago

    Why do I get “Cannot Comply” when i try to install ultrasn0w

  •  
    KT1 year, 6 months ago

    Its not recognizing my sim and is searching for a cell signal.

  •  
    KT1 year, 6 months ago

    Hi, I have an iphone 3gs 4.1 with baseband 6.15 that I was able to jailbreak but unable to unlock with ultrasn0w that I installed with Cydia.  Should I re jailbreak it with a lower baseband?    

  •  
    Qasim1 year, 6 months ago

    THANKS MAN !!!! YOUR A LIFE SAVER+) THANK YOU SOOOO MUCH> GOD BLESS YOU =)

  •  
    naimjapan1 year, 7 months ago

    thnks   thanks thanks   1000% work  Draganime    ur  sujetion

  •  
    Lucian Ispasescu1 year, 7 months ago

    Thank you, Draganime

  •  
    zair khan1 year, 7 months ago

    its really works thnx…. :)

  •  
    Lemuel1 year, 8 months ago

    Please help. I cant download ultrasnow on cydia. It says that “the requested modifications cannot be applied due to required dependencies or conflicts that cannot be automatically found or fixed ” ultrasnow depends on iOS Firmware >=3.0 but my OS is 4.2.1, 6.15.00 BB iphone 3g. What should i do?

    •  
      Draganime1 year, 8 months ago

      hey, i had this problem but what worked for me was to delete the ultrasnow source then re-add the source then install and u dont get that problem :P

      •  
        Raj1 year, 8 months ago

        Boss, it worked, thnx

      •  
        AG1 year, 4 months ago

        Worked man thanks

      •  
        hbilo1 year, 3 months ago

        thanks

      •  
        jun12 months ago

        nice… having headaches with this…

      •  
        Dickie Moonshine11 months, 1 week ago

        You sir, are the man!  You da man!

      •  
        Vic9 months ago

        Thanks, you are the man!

      •  
        Joseph6 months, 2 weeks ago

        Thanks!!! @Draganime

    •  
      zohaib1 year, 5 months ago

      it also worked for me

    •  
      alelizy11 months ago

      Tengo tu mismo problema, pudiste resolverlo? Te agradeceria muchisimo tu ayuda. Saludos

  •  
    srinivas1 year, 9 months ago

    thanks brother u rocks

  •  
    deni1 year, 9 months ago

    thanksss

  •  
    matthew1 year, 9 months ago

    hi i have done everything it says but it crashd on the reboot bit and now wen i try to open cydia  it gets stuck on loading data  can anyone help me i have got iphone 3g jailbroke help !!!!!!!!!!1

  •  
    James Oti1 year, 10 months ago

    thanx so much mahn..this haz really helped alot..i was almost taking my iphone to the scrap..thanx bigtym mahn…big-up..

  •  
    asher khan1 year, 11 months ago

    thanks man i owe u big time i dont know how to thank u but i pray tht ur all wishes come true amen thanks thanks a lot i cant explain u my feelings and this really works

  •  
    Jamal2 years, 4 months ago

    Hi
    I’m about doing that and i think that it will work……………………………Finished……..Restarting………..That’s working!!!!!!!!!!!!!!!!! thank you very much

  •  
    Judy2 years, 5 months ago

    I’ve tried this but I get Restart Springboard
    and it loops in the rotating circle forever.
    I can only get out of it by hitting home and power button
    if I put my SIM in I see the provider, but can only make emergency calls or the first screen says “different SIM detected” Plug into iTunes
    help, thanks

  •  
    Tristianabrams2 years, 6 months ago

    I have a problem with my iphone 3g on 4.2.1 when i restore i get and eror and when i jailbreak it it goes to recovery mode.

  •  
    George2 years, 7 months ago

    i tried this but no joy still i get no service i get errors when i downloadrepo

  •  
    shravan2 years, 10 months ago

    hi guys,,,,,,,, i have a problem that my iphone 3g showing no service …. i knw using ultrasnow it is fixed but the wifi connectivity is not available for plz tell me how to fix this p[roblem without wifi if u knw the solution plz mail me the solution my mail id is shravanpathipaka148@gmail.com

  •  
    Robbie Nana Akua3 years, 1 month ago

    Thank you soo much! This worked like a charm, I thought my iPhone was gone for good but I managed to unlock it and all :) Cheers

  •  
    camila3 years, 2 months ago

    I FOLLOWED ALL THE INSTRUCTIONS ABOVE AND DIDN’T WORK CAN SOMEONE PLEASE HELP MEEE???

    •  
      Pramod3 years, 2 months ago

      What is your BB, iOS & iPhone model details? Please spend time in making your query much more detailed with the necessary details as its very difficult for us to make guesses.

  •  
    maulana hidayat3 years, 3 months ago

    thank you very much, love this thread, very helpfull, it,s work,!!!
    lol..

  •  
    Pepinho153 years, 4 months ago

    MAn! this rlly!! works!! thanks alot!! GPS is not important.. xDD

  •  
    suman3 years, 4 months ago

    Works like a charm. Go to http://bit.ly/puOynD to jailbreak your iphone and then follow the instruction here to unlock.

    Works well for iphone 3G.

  •  
    rob3 years, 7 months ago

    I used limera1n to jailbreak and ultrasn0w to unlock but my 3Gs cant find service, it is on the 4.1 and 05.14.02, 3G is turned off too, im trying to connect to tmobile. What’s the deal, any ideas?

  •  
    Titi3 years, 7 months ago

    My current Carrier doesn’t allow me (yet) to access 3G, I have to live with Edge. But I prefer that (coupled with Wifi sometimes) rather than loosing my GPS. I think I’m fortunate enough when I decided to stay away from this unlock method. Sadly, some guys were trapped when crossing the point of no return of this method.

  •  
    Titi3 years, 7 months ago

    Then the real queestion is: Remain Locked Forever or Loose your GPS Forever!

    •  
      Wolverine3 years, 7 months ago

      Lose GPS or use your iPhone as an iPod for the rest of your life.

      •  
        Titi3 years, 7 months ago

        Is Turbo sim an option here?

        •  
          Wolverine3 years, 7 months ago

          Gevey SIM is only for iPhone 4. In past, TurboSIMs were used to unlock iPhone 2G.

  •  
    Titi3 years, 7 months ago

    What about the GPS bug with the iphone 3g and 3gs? Is it fixed?

    •  
      Wolverine3 years, 7 months ago

      It is not a bug. iPad baseband do not (will not) support GPS ever!