Launch day 3GS + iOS 4.2

Discussion in 'Jailbreaks and iOS Hacks' started by Inconsequential, Dec 5, 2010.

  1. Inconsequential macrumors 68000

    Joined:
    Sep 12, 2007
    #1
    How do I check my 3GS (being a launch day model!) can be upgraded to iOS 4.2 without loosing the untethered restart ability?

    Is there a baseband or something that can tell?

    My Modem firmware (baseband?) is 05.14.02.

    Cheers :)

    Edit: If mines an effected model then I'll stick with 4.1.
     
  2. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #2
    If you are sure you have a launch day 3Gs, then you have the old bootrom. Old bootrom 3Gs iPhones are untethered and will always be untethered.
     
  3. Inconsequential thread starter macrumors 68000

    Joined:
    Sep 12, 2007
    #3
    100% sure.

    f0recast also says my 3GS is untethered so thats good :)

    Now I will have to go and find out how to upgrade!
     
  4. PsstGreek macrumors 68040

    PsstGreek

    Joined:
    Oct 21, 2010
    Location:
    Tampa Bay
    #4
    You check by looking at the serial number. The 4th and 5th digits tell you what week it was made. The 3rd tells you the year. Since you bought the 3GS on launch day you most likely have the old bootroom (Model MB) iPhone 3GS.
     
  5. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #5
    You do know that the MB/MC model has nothing to do with old/new bootrom right? People on here have tried in vain to find out what the difference is, we have yet to find it.
     
  6. SandboxGeneral Moderator

    SandboxGeneral

    Staff Member

    Joined:
    Sep 8, 2010
    Location:
    Orbiting a G-type Main Sequence Star
    #6
    Wirelessly posted (iPhone 3GS: Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en) AppleWebKit/420+ (KHTML, like Gecko) Version/3.0 Mobile/8B117)

    What does it mean to be untethered? My third digit is 9 (2009) and fourth and fifth digits are 21. I bought my 3GS on launch day.
     
  7. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #7
    It means, that with the current 4.2.x jailbreak you can restart your iPhone without the help of a computer. A tethered jailbreak you must use a computer to rejailbreak your iDevice everytime you restart.
     
  8. Inconsequential thread starter macrumors 68000

    Joined:
    Sep 12, 2007
    #8
    Im hoping someone here can clear up my confusion:

    Cydia has been updated to iOS 4.2, correct?
    Which way of upgrading my 4.1 to 4.2 is the easiest?

    I used greenpoision on 4.1, and I assume I need to use a method that includes the updated cydia?

    It's not that important for me to upgrade now, it's just I have some time available so I can do it now!

    Any opinions on my way forward? (Or standing still, the case may be :p)
     
  9. nebo1ss macrumors 68030

    Joined:
    Jun 2, 2010
    #9
  10. Inconsequential thread starter macrumors 68000

    Joined:
    Sep 12, 2007
    #10
    For anybody in my situation.

    redsn0w b5 worked perfectly :)
     

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