1. sabersurfer's Avatar
    I have a 3GS 4.2.1 with baseband 5.15.04

    I want to unlock it & currently there is only the "Upgrade to iPad 6.15.00 baseband" option available.
    I know this will "BREAK" my GPS

    I have already jailbroken it with Greenpois0n

    How do i go about upgrading the baseband to 6.15.00?
    Maintaining the FW 4.2.1
    2011-04-11 01:30 AM
  2. RochOAR's Avatar
    Use Redsn0w and check the box to upgrade to iPad baseband. Then install ultrasnow repo and run ultrasnow.

    I used the directions in iclarified.com. The only thing that hung me up was on Windows 7 I had to change the affinity permission for redsn0w
    2011-04-11 03:53 AM
  3. Goof's Avatar
    2011-04-11 04:39 AM
  4. sabersurfer's Avatar
    Thanks RochOAR I just unchecked install cydia and checked the upgrade to ipad baseband.
    Then i installed ultrasn0w from cydia
    worked perfectly.
    2011-04-11 06:27 AM
  5. SweetGum's Avatar
    Hi! I have the same 3gs 4.2.1 jailbreak with greenposi0n, can someone give me an advice when uncheck cydia and install ipad bb is the phone automatic reboot or i have to do something to reboot? Thanks
    2011-04-19 06:07 PM
  6. i.Annie's Avatar
    It will reboot for you
    2011-04-19 06:26 PM
  7. SweetGum's Avatar
    Thanks iAnnie
    2011-04-19 09:10 PM
  8. i.Annie's Avatar
    No problem
    2011-04-20 02:06 AM