iPhone Downgrade ios 6 to ios 5.1.1

Discussion in 'iOS 6' started by Zack Magee, Aug 23, 2012.

  1. Zack Magee macrumors newbie

    Aug 23, 2012
    I had iOS6 installed on my iPhone 4s. I wanted to downgrade to iOS 5.1.1. I downgraded, but when I attempted to modify the info.plist to make my ios6 backup compatable with ios 5.1.1, it said it could not restore from back up because it is corrupted or not compatable.

    Any suggestions? Thanks!
  2. Menel macrumors 603


    Aug 4, 2011
    DFU mode, google it, and restore in iTunes will always take you back to the latest public release. In this case, 5.1.1.

    You cannot load a backup from a newer version into an older version. There would be new fields, data structures, etc that the old OS doesn't know how to process.
  3. Zack Magee thread starter macrumors newbie

    Aug 23, 2012

    Yeah, I already got the phone restored (I may be a noob to the forum, but I'm no noob ;) ).

    Bummer! I know it's possible for 5.1 > 5.0, I was hoping it would be possible for 6 > 5.

    Edit: if it helps, I am jailbroken.
  4. miss.manson macrumors 6502a


    Dec 12, 2011
  5. hamkir macrumors newbie

    Aug 22, 2012
    Will downgrading from iOS 6 GM to 5.1.1 still be possible after iOS 6 is made available to the public? To specify I'm referring to the process on a phone that is not jailbroken or anything like that.

    I would like to put iOS 6 on my 4S to play with it before I get my 5 on Friday. However I would like to be able to go back to 5.1.1, I figure the 4S will be more attractive when I sell it if it has 5.1.1 which can be jailbroken.

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