MobileMe Account Validation Failure after JailBreak 4.2.1

Discussion in 'Jailbreaks and iOS Hacks' started by ricspooner, Apr 25, 2011.

  1. ricspooner macrumors newbie

    Jun 10, 2010
    iPhone 3G, Previously JB on iOS 4.1 BaseBand 05.13.04

    I've encountered an odd problem after jailbreaking using a custom IPSW 4.2.1 with preserved baseband 05:13:04. The phone was then unlocked using ultrasn0w 1.2.2

    The JailBreak run perfectly and I haven't experienced any problems other than that explained below. I have installed apps, run a backup and transfered purchases to iTunes Cydia is working fine (now Amazon have sorted themselves out) and all Cydia apps are installing without issue.

    It seems that Apple have locked out users from accessing MobileMe accounts via Jailbroken devices (specifically my iPhone/iOS/Baseband), although this obviously needs more investigation.

    When adding a new MobileMe account in Email I receive the following error.


    My best guess is that Apple are Validating the device by requesting a unique string created by combining the baseband and firmware. This theory is based on those two (firmware and baseband) being mismatched on my phone.

    I've only found a couple of posts on other forums about this issue and they were very recent (past month), so it seems that this may only affect users updating/restoring to 4.2.1 and preserving their baseband or updating it to 6.13(iPad).

    This is a very new discovery and I could be way of the mark with my theory but the symptoms of this problem have been experienced by others and seemingly there is no clear answer from those "in-the-know".

    If anyone has any suggestions please let me know. I'll be posting this up on other forums to spread my net was wide as possible.
  2. ricspooner thread starter macrumors newbie

    Jun 10, 2010
  3. iammike1 macrumors 6502a


    Oct 25, 2007
    Columbia MD
    No problems with jailbreak and MobileMe on 4.3.1. Not jailbroken at the moment so can't tell you if this is something new. Might wanna check out the MobileMe area.
  4. cookiesnfooty macrumors 6502


    Jul 1, 2009
    Have you checked your time is synced correctly? This is the only time I experienced errors with mobile me. plug your phone into Itunes and it should alter the time.

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