downgrade back to 4.0 from 4.3 then back to 4.1/4.2?

Discussion in 'Jailbreaks and iOS Hacks' started by iMaconApple, Mar 23, 2011.

  1. iMaconApple macrumors 6502a

    Joined:
    Jun 30, 2009
    Location:
    Sunny Diego
    #1
    update to 4.3 i do have my blobs save on cydia 4.1/4.2 can i just downgrade back to 4.2/4.1? i didnt save my shsh blobs on tiny um on my mac..
    i do have the 4.0.2 files saved on my mac..can i just use that then go back on 4.1/4.2?

    i did update my itunes ect..on my mac..will i have to downgrade my latest itunes?

    thanks
     
  2. Myzhi macrumors 6502a

    Joined:
    Dec 15, 2009
    #2
    On IP4, you can only restore back to whatever SHSH blobs you have saved.

    Do:
    1) Download and run Tinyumbrella. Click "Save my SHSH...". What was saved are what you can restore to. Next, click on "TSS Server...".
    2) Find and download the firmware file you wish to restore to.
    3) Startup iTunes and restore with downloaded firmware file.
     
  3. iMaconApple thread starter macrumors 6502a

    Joined:
    Jun 30, 2009
    Location:
    Sunny Diego
    #3
    tiny umbrella wont kick me off recovery mode...it shows a text by greenposin but thats all...how can i exit off recovery mode..
     
  4. kuebby macrumors 68000

    kuebby

    Joined:
    Jan 18, 2007
    Location:
    SFV
    #4
    I don't understand it all but here's the greenpois0n guide to downgrade from 4.3 to 4.2.1.
     
  5. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #5
    You can go up and down to whatever firmware you want as long as you have shsh blobs for that particular phone and the firmware version you're trying to restore to.
    What firmware are you stuck on now and your phone is stuck on recovery?
    The TU site has plenty of info and tools to help you kick it out of recovery mode.
    http://thefirmwareumbrella.blogspot.com/p/prevent-iphone4-baseband-update.html
    http://thefirmwareumbrella.blogspot.com/search?updated-max=2011-03-23T10:46:00-04:00&max-results=1
     
  6. JCA90 macrumors member

    Joined:
    Jun 7, 2010
    #6
    So i updated to 4.3, and my phone backed up on 4.3, and then i wanted to downgrade to 4.2.1 (i have shsh blobs saved all the way back to 3.1.3) and i was able to downgrade fine and everything worked, but when i went to restore from backup, it said i couldn't restore with this backup because it was made with a future firmware. So my question is, is there a way to get past that, or do i have to dig for a backup from my time machine (which is a week old) to get it to work?
     
  7. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #7
    Yes, you have to find an older backup that was for 4.2.1 or below.
    You wont be able to use the 4.3 backup on older firmware.
     
  8. JCA90 macrumors member

    Joined:
    Jun 7, 2010
    #8
    Dang, alright, thanks!
     

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