iOS 4.2.1 Jailbreak does not work

Discussion in 'Jailbreaks and iOS Hacks' started by groschi, Dec 8, 2010.

  1. groschi macrumors newbie

    Joined:
    Nov 12, 2010
    #1
    Hey folks,

    I tried to activate and jailbreak my iPhone 4 but I won't work. I conserved my baseband, updated from iOS 4.1 to 4.2.1 and tried to Jailbreak with with latest RedSn0w. The problem is that the iPhone will not boot after the jailbreak. It's stuck on the Apple symbol. I tried it to jailbreak with PwnageTool 4.1.3 also but I will not activate the iPhone 4 so I cannot use my T-mobile card. Any suggestions?

    Thanks in advance
     
  2. rgarjr macrumors 603

    rgarjr

    Joined:
    Apr 2, 2009
    Location:
    Southern California
    #2
    U need to use redsnow to help it boot up, it's tethered.
     
  3. PaulDoFish macrumors regular

    Joined:
    Jun 23, 2010
    #3
    You cannot preserve your baseband at 4.2.1 on an iPhone 4. The new OS has a Baseband check to prevent your iPhone from booting if it does not have the newest BB.

    If you have your shsh's saved, revert back to your last firmware. If not, well, you're SOL i think...
     
  4. rgarjr macrumors 603

    rgarjr

    Joined:
    Apr 2, 2009
    Location:
    Southern California
    #4
    how did you preserve your BB when you updated to 4.2.1?
     
  5. PaulDoFish macrumors regular

    Joined:
    Jun 23, 2010
    #5
    That's his problem. His BB is preserved, but iOS4.2.1 will not boot on an iPhone 4 if an old BB is installed.
     
  6. TB07-NJ macrumors 68020

    Joined:
    Jul 7, 2008
    Location:
    FORMERLY NJ now FL
    #6
  7. TB07-NJ macrumors 68020

    Joined:
    Jul 7, 2008
    Location:
    FORMERLY NJ now FL
    #7
    Wrong.
     
  8. PaulDoFish macrumors regular

    Joined:
    Jun 23, 2010
    #8
    ??

    That's weird.. What up with everyone not being able to do this when iOS4.2.1 came out?..

    Did they update TU?
     

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