Downgrade iOS 9 to 8.4.1?

Discussion in 'iOS 9' started by joaotomas, Sep 16, 2015.

  1. joaotomas macrumors newbie

    Joined:
    Jan 30, 2015
    #1
    Hi guys, iOS 9 is very lag on my iPhone. how to downgrade?
     
  2. vertsix, Sep 16, 2015
    Last edited: Sep 17, 2015

    vertsix macrumors 65816

    vertsix

    Joined:
    Aug 12, 2015
    #2
    Yeah, you can downgrade.

    However, downgrading will only work for a few days, while Apple continues signing 8.4.1.

    1. Download the ipsw file from http://ipsw.me (select your device, and select and download the iOS 8.4.1 restore file).

    2. Open iTunes (needs to be 12.2.2 or later, if not update), plug in your device, and select SHIFT + Restore iPhone to select the downloaded restore file. (Choose OPTION if on Mac.)

    3. Your phone will be restored to factory settings which means all data will be lost, but you can restore from an iOS 8 backup on 8.4.1 again.

    Cheers!
     
  3. joaotomas thread starter macrumors newbie

    Joined:
    Jan 30, 2015
    #3
    Thank you!!!!! I can already do with itunes that came out today (12.3.0) also works. I did not think it works. Thank you again. Cumps
     
  4. BasicGreatGuy Contributor

    BasicGreatGuy

    Joined:
    Sep 21, 2012
    Location:
    In the middle of several books.
    #4
    Someone needs to create a downgrade thread and then ask the mods to pin it. Would save a lot of people from asking the same thing over and over with new threads.
     
  5. tea88 macrumors newbie

    Joined:
    May 6, 2014
    #5
    i'm using the australian model iPhone 5s A1530, do i download the gsm or global model?
     
  6. solmaker macrumors member

    Joined:
    Nov 23, 2007
    #6
    Thanks, vertsix, for this terrific help! One typo: the correct key to use with the Restore iPhone button is OPTION not SHIFT (as has been fixed in the quote below).

     
  7. lewy, Sep 17, 2015
    Last edited: Sep 17, 2015

    lewy macrumors regular

    Joined:
    Nov 6, 2010
    #7
    I'm getting this going back from 9.1 to 8.4.1:

    "Cannot restore backup because it's either corrupted or not compatible with this device".

    Do you know why?
     
  8. KALLT macrumors 601

    Joined:
    Sep 23, 2008
    #8
    You need a backup that matches either the version of the OS you are running or an older version. Thus to restore a backup of iOS 8.4.1, you need a backup that isn’t newer than iOS 8.4.1, otherwise it will fail.
     
  9. skinned66 macrumors 65816

    skinned66

    Joined:
    Feb 11, 2011
    Location:
    Ottawa, Canada
    #9
    Download from here and the choice will be more obvious.
     
  10. lewy macrumors regular

    Joined:
    Nov 6, 2010
    #10
    But I'd like to set up my iPhone as a new device..
     
  11. KALLT macrumors 601

    Joined:
    Sep 23, 2008
    #11
    Then just follow the steps vertsix mentions above. You need to select the “Restore iPhone” option, not “Restore Backup”.
     
  12. lewy macrumors regular

    Joined:
    Nov 6, 2010
    #12
    That's what I'm doing! Can't figure this out. Gonna try one more time later. Thanks guys ;).
     
  13. joaotomas thread starter macrumors newbie

    Joined:
    Jan 30, 2015
    #13

    I downgrade iPhone 5s global. But it took three times to get.
     
  14. lewy macrumors regular

    Joined:
    Nov 6, 2010
  15. RiderX macrumors regular

    Joined:
    Nov 9, 2012
    #15
    Downgrading is easy. And you can do it for a few more days.

    So why believe all the negativity? Upgrade to 9, use it for 1-2 days and if you still believe you don't want it, go back to 8.4.1

    But almost sure: you will not look back.
     
  16. lewy macrumors regular

    Joined:
    Nov 6, 2010
    #16
    RiderX, I'm trying to get rid of that laggy system, it's really annoying and frustrating to use iOS9/iOS9.1, but I don't get it why I can't downgrade.
     
  17. crjackson2134 macrumors 68020

    crjackson2134

    Joined:
    Mar 6, 2013
    Location:
    Charlotte, NC
    #17
    You know, I love Apple devices but I get tired of all the lag issues at the start of every release. I just wish for once I could install an OS version upgrade (not point release) without having to wait months for the lagginess to be resolved (if it ever is). I should have waited, I iPad Air 2 now feels like an iPad 3 on depressants. Slower than slow... :(
     
  18. joaotomas thread starter macrumors newbie

    Joined:
    Jan 30, 2015
    #18
    Very lag. walk to get very bad. Always many mistakes in the systems. nothing like the old days
     
  19. ArchaicTZ macrumors newbie

    ArchaicTZ

    Joined:
    Sep 16, 2015
    Location:
    Gilbert, Arizona
    #19
    That is way you don't download right away... always wait and watch before you update your phone :)
     
  20. vertsix macrumors 65816

    vertsix

    Joined:
    Aug 12, 2015
  21. tea88 macrumors newbie

    Joined:
    May 6, 2014
    #21
    Thanks, after a bit of research its the global model.

    For anybody else in Australia wondering, download the global pack for 5s.
     
  22. btv94 macrumors newbie

    Joined:
    Nov 13, 2013
    #22
    Please help me to identify what type of phone do i have.
    ATT iPhone 5c. GSM or Global
    After downloading iPhone5,3_8.4.1_12H321_Restore.ipsw and extract from zip file, the ipsw cannot be found. What do i need to do to extract ipsw file from zip. I'm using Win 8 os.
    Thanks,
     
  23. vertsix macrumors 65816

    vertsix

    Joined:
    Aug 12, 2015
    #23
    Make sure you look through your folders correctly.

    You can also download it directly from ipsw.me without issues.
     
  24. btv94 macrumors newbie

    Joined:
    Nov 13, 2013
    #24
    I'm using this guide and where i have problem is on step 7. It just cannot find the file.
    Will download from ipsw.me when i get home and try again.
    Thanks,
     
  25. schwadorf macrumors newbie

    schwadorf

    Joined:
    Mar 13, 2013
    Location:
    Istanbul
    #25
    The file you are trying to unzip is the IPSW file itself, unless you downloaded it from an untrustworthy site.
     

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