9.1 beta - downgrade to 9.0 GM

Discussion in 'iOS 9' started by GIZBUG, Sep 11, 2015.

  1. GIZBUG macrumors 65816

    GIZBUG

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    #1
    Is it as simple as deleting the public beta profile, rebooting? Or would I need to connect to iTunes again and manually install the ipsw file?
     
  2. C DM, Sep 11, 2015
    Last edited: Sep 11, 2015

    C DM macrumors Westmere

    Joined:
    Oct 17, 2011
    #2
    9.0 (and generally any) GM can only be installed via iTunes. Even when the final version of 9.0 comes out you'd still need to do it using iTunes since you would already be on a higher 9.1 version and would be "downgrading".
     
  3. GIZBUG thread starter macrumors 65816

    GIZBUG

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    #3
    Thanks. So I'll delete the beta profile, plug phone into iTunes and restore the 9.0 GM
     
  4. GIZBUG thread starter macrumors 65816

    GIZBUG

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    #4
    So I just hit shift/check for updates on itunes, installed 9.0GM, and all is fine. I then deleted the 9.1 Beta profile, however when I check for updates, it still wants to download 9.1 Beta. Weird. Suggestions?
     
  5. Benz63amg macrumors 68000

    Benz63amg

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    Oct 17, 2010
    #5
    why do you want to downgrade? whats wrong with 9.1?
     
  6. GIZBUG thread starter macrumors 65816

    GIZBUG

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    #6
    As I pointed out, the carrier update for T-Mobile is HORRIBLE. I get 1 bar, hard to get LTE (always 4G) with 9.1 Beta. Full bars and full LTE with 9.0. Phone is no good if I can't use it as a phone, so I downgraded.
     
  7. GIZBUG thread starter macrumors 65816

    GIZBUG

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    #7
    [​IMG]

    Not sure how to stop/cancel that, it won't run as long as I stay off wifi though
     
  8. benji888 macrumors 65816

    benji888

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    #8
    Apple doesn't officially support iOS 9 until Sept. 16.

    In any case, I personally would restore to 8.4.1 to get the latest, non-beta carrier update, then update to 9.0 on the 16th. ...I'm running iOS 9.1 betas on devices that don't matter, but, not on my main iPhone (6), I'm (trying to patiently) wait for Sept. 16th to update my iPhone.
     
  9. GIZBUG thread starter macrumors 65816

    GIZBUG

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    #9
    So Download 8.4.1 ipsw file, and restore that in itunes?
     
  10. C DM macrumors Westmere

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    Oct 17, 2011
    #10
    Or out the phone into recovery or DFU mode and let iTunes do it all for you.
     
  11. benji888 macrumors 65816

    benji888

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    #11
    this^ ...or if you have a proper backup, and have synced on iTunes w/8.4.1 on your phone, you may have it on your computer already.

    The reason I suggested going back to 8.4.1 is that, even though 9.0 is GM, the carriers still might put out carrier updates on launch day.
     
  12. Tokenfreak macrumors 6502

    Tokenfreak

    Joined:
    Oct 31, 2011
    #12
    Does downgrading from 9.1 to 9 work? I am planning on selling my iPhone 6 plus on eBay and want to sell it with the official iOS 9 instead of 9.1. Thanks.
     
  13. GIZBUG thread starter macrumors 65816

    GIZBUG

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    #13
    So far I would say no
     
  14. Paddle1 macrumors 68030

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    #14
    Yes you can.
     
  15. benji888 macrumors 65816

    benji888

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    #15
    If you're selling it before the 16th you should downgrade to 8.4.1. If after the 15th, you'll be able to downgrade to 9.0, as apple does not officially support it until the 16th.

    FYI: be sure to sign out of your apple ID account before you wipe the phone, otherwise you have to go through the setup process and then sign out. Either way, if you don't sign out, it will still be attached to your apple iD and the buyer won't be able to use it...until you get online and do what steps have to be done to fix this.
     

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