Rookie: Downgrading from iOS 9 to 8.3 & Restoring From iOS 9 backup to iOS 8.3

Discussion in 'iOS 9' started by dialekt, Jun 9, 2015.

  1. dialekt macrumors member

    Joined:
    Jun 3, 2014
    #1
    Rookie Question: Can I downgrade from iOS 9 to 8.3 & Restore From iOS 9 backup to iOS 8.3? At the moment it seems as though I am not allowed to restore a newer OS backup to an older one. I would really dread doing a fresh install. Worst case I'll have to upgrade back to iOS 9 and ride it out with all of it's bugs through each beta which would be very unfortunate but it's one of the risks we take.

    For some reason I thought each backup was saved within the list of device backups. But seems like it's only archiving the most recent backup which is very unfortunate because now it's only the most recent firmware backed up which is iOS9. Need to figure out how to set myself up properly the next time I try out a beta so that I can always revert back
     
  2. batting1000 macrumors 604

    Joined:
    Sep 4, 2011
    Location:
    Florida
    #2
    Get the 8.3 .ipsw and shift/alt click Update in iTunes and double click the iOS 8.3 file. May or may not cause issues though. Fresh restore would be best.
     
  3. penajmz macrumors 68030

    penajmz

    Joined:
    Sep 11, 2008
    Location:
    New York City
    #3
    If you backed up after you updated to iOS 9, that's it. You can't downgrade and restore that backup.
     
  4. Stuke00 macrumors 68000

    Joined:
    Oct 11, 2011
    Location:
    Collinsville,IL
    #4
    You can edit a plist file of your itunes backup and change 9.0 to 8.3 in the version. YMMV tho going from 9.0 to 8.3. I did it from 8.4 to 8.3 several times without issues.
     
  5. spoa94 macrumors 6502a

    spoa94

    Joined:
    Oct 12, 2011
    Location:
    New Orleans, LA
    #5
    Explain how to do this please
     
  6. kevroc macrumors 6502

    Joined:
    Oct 15, 2011
    #6
    Before upgrading iOS, ALWAYS go into your mobilesync folder and append something like "- iOS 8.3" at the end of the folder name. That way when your iphone backs up again, it will create a new folder and you'll always have your previous backup untouched.
     
  7. Stuke00 macrumors 68000

    Joined:
    Oct 11, 2011
    Location:
    Collinsville,IL
    #7
    goto %appdata%\Roaming\Apple Computer\MobileSync\Backup\ on Windows or wherever your backups are stored on OS X. Edit Info.plist with a text editor.

    You will see
    <key>Product Version</key>
    <string>8.3</string>

    This indicates the version. It may be 9.0 if you are on iOS 9. change it to match the version of the iOS you want to restore this onto. YMMV and I would recommend backing up the file before you edit it. I haven't done this from 9.0 to 8.3 so who knows what kind of weird issues it may introduce.
     
  8. lewismayell macrumors 6502a

    Joined:
    Mar 24, 2013
    Location:
    South West England
    #8
    Have you already sorted this? If not I found the best way to do this is if you are running time machine backups for your Mac to go into the last one you had from yesterday or whichever backup had your newest 8.3 backup and then restore it to the desktop, then either delete or rename your new 9.0 backup folder and drag the 8.3 one in, it will then show in iTunes when you restore, though if you did this with changing the info.plist could you say if that worked or not?
     
  9. skyperbon macrumors regular

    Joined:
    Jul 7, 2010
    Location:
    All over the WWW...
    #9
    Trying the 'update' option to update(or downgrade) from iOS 9 to 8.3 doesn't work properly. After going through the complete update process, it shows an error after which the only option is to 'Restore' the iPhone.

    If you restore your iPhone, choose the method of restoring backup from iTunes. Then you should be able to get a drop down option to select your recent backups made of your iPhone. Select the one that mentions iOS 8.3(or whichever you want) and let it do the rest.
     
  10. dialekt thread starter macrumors member

    Joined:
    Jun 3, 2014
    #10
    I definitely should have done this. At the moment I just decided to live a life full of sadness and downgrade to 8.3 with a fresh install. I'm considering upgrading to 8.4 Beta 4 ....the highlight of iOS 9 was the font and newly refreshed music player. I'm reading around to see if 8.4 appears stable and everyone keeps talking about landscape being removed from music player or something? Whatever the case is...if I upgrade to 8.4 beta and 8.4 gets publicly released in final form..would iTunes recognize it as an upgrade or could I just restore from backup of the beta without any issues, after restoring in DFU mode to final revision of 8.4?
     
  11. Switchback666 macrumors 68000

    Switchback666

    Joined:
    Nov 16, 2012
    Location:
    SXM
    #11
    If you get stuck with a restore screen maybe you can kick it out with tiny umbrella.

    I updated to iOS 9 without a backup and was surprised the iCloud backup was not working, socks but I downgraded and did a fresh restore (lost my 277 flappy bird score ).
     
  12. iamMacPerson macrumors 68030

    iamMacPerson

    Joined:
    Jun 12, 2011
    Location:
    AZ/10.0.1.1
    #12
    If you backed up your iPhone to iTunes before installing iOS 9, put the phone into DFU mode and have iTunes download and restore the 8.3 IPSW to the phone. Then, restore from the iOS 8 backup from before the upgrade.
     
  13. kevroc macrumors 6502

    Joined:
    Oct 15, 2011
    #13
    I believe the last beta is the official release, so you don't need to upgrade at that point as you are already on the release version.

    I'm not sure I could handle doing a clean install, I'd probably just switch to Android at that point to suffer a different kind of misery :)
     
  14. Sappharad macrumors member

    Joined:
    Mar 21, 2009
    #14
    Just wanted to chime in and mention this. I was able to go from 9 Beta 1 to 8.4 Beta 4 without using DFU mode. Just option-click the restore button in iTunes, select the ipsw, and it worked.

    I'm not sure if this was because 8.4 beta 4 came out 1 day after 9b1 and it let me because it was "newer" or maybe DFU isn't actually required and people just say it is.
     
  15. AbSoluTc macrumors 68040

    AbSoluTc

    Joined:
    Sep 21, 2008
    #15
    So I cannot downgrade back to 8.3 and restore from my iCloud backup if that backup was from Beta 9?
     
  16. skyperbon macrumors regular

    Joined:
    Jul 7, 2010
    Location:
    All over the WWW...
    #16
    No. You would not be able to restore from the iCloud backup as traces of the iOS 9 beta would be there from your backup which may crash iOS 8.

    The only way to restore would be if you had taken a backup on your local machine and restore from there.
     
  17. AbSoluTc macrumors 68040

    AbSoluTc

    Joined:
    Sep 21, 2008
    #17
    Of course my stupid self did not do this. Ugh. The battery drain is terrible and wanted to downgrade. I have never done that with a beta before. Oh well, live and learn. Hopefully b2 will address the issue.
     
  18. skyperbon macrumors regular

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    Jul 7, 2010
    Location:
    All over the WWW...
    #18
    If i remember correctly, I had done the same thing when iOS 7 beta came out. Lost some important backups. But as you mentioned, 'live and learn'.
     
  19. patricktan97 macrumors newbie

    Joined:
    Jun 15, 2015
    #19
    I have a question. If i downgrade my ios 9 beta version to ios8.3 by using ipsw, s it considered as jailbreaking? Is there any affect if i do that.? Any other way rather than jailbreak my iphone to downgrade it to ios9?

    *I just upgraded ios 9 beta versions yesterday.
     
  20. windywalks macrumors 6502

    Joined:
    Mar 12, 2004
    #20
    This operation has nothing to do with jailbreaking, as both of these are official Apple firmware files, albeit you shouldn't be using the iOS 9 beta as you are not a developer but no one's going to care unless you do.
     
  21. windywalks macrumors 6502

    Joined:
    Mar 12, 2004
    #21
    Same here, you can jump from version to version without consequence other than no being able to restore the old backup as it is not compatible anymore.
     
  22. windywalks macrumors 6502

    Joined:
    Mar 12, 2004
    #22
    This works unless the iPhone hasn't backed itself up after the update, if it has you have your old files in a backup with iOS 9 overwritten on it, hence it's not going to be able to restore to 8.4 without modification.

    I have tried to modify the plist file where the iOS version 9 is mentioned, but once the restore finished the first thing I noticed was that Messages didn't display anything. Once I changed and reverted to the previous iOS 9 backup Messages were back, so I guess there's at least this incompatibility to think of.
     
  23. baller1308 macrumors 6502a

    Joined:
    Dec 8, 2009
    #23
    As others have said, once you overwrite your old backup with iOS 9 then you will not be able to restore from that back up. You will have to restore from an older backup if one is available.

    I am thinking if you had the foresight you could have backed up prior to upgrading to 9, and then made a copy of that backup to a different location. That way you can save the iOS 9 backup along with having the 8.3 available if you wanted to downgrade.
     
  24. patricktan97 macrumors newbie

    Joined:
    Jun 15, 2015
    #24
    If I downgrade ios9 to ios 8.3 by clicking "restore iphone" will my data inside my phone be erased? Is there any ways for me the keep my data? I wanna downgrade ios9 to ios8.3, it drains a lot battery..weaken the battery life.
     
  25. WB2Colorado macrumors regular

    WB2Colorado

    Joined:
    Aug 1, 2008
    Location:
    Durango, Colorado
    #25
    Restoring the phone reinstalls the most recent public release of the operating system (iOS 8.3 currently) and erases everything. If you don't have a backup from BEFORE you upgraded to iOS 9, you're SOL.
     

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