Downgrade 4.2.1 to 4.1 and Unlock?

Discussion in 'Jailbreaks and iOS Hacks' started by claus1225, Jan 25, 2011.

  1. claus1225 macrumors member

    May 25, 2009
    Hi all,

    Has anyone downgraded iphone 4 running on iOS 4.2.1 to 4.1 and unlocked it?

    Is this the only and the best way to unlock iphone 4 on 4.2.1?

    thank you,
  2. Applejuiced macrumors Westmere


    Apr 16, 2008
    At the iPhone hacks section.
    You cannot downgrade an iphone 4 without shsh's of the firmware version you want to downgrade to.
    But even if you could the baseband will not be downgraded, just the firmware so you will not be able to unlock it.
    You need to be on stock 4.0.2 or below version basebands to unlock.
  3. AbyssImpact macrumors 6502a

    Aug 6, 2010

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