How do you downgrade back to iOS 9 iPhone 6s

Discussion in 'iOS 9' started by Googlyspockuser, Mar 30, 2017.

  1. Googlyspockuser

    Googlyspockuser New Member

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    I really am wanting to go back to iOS 9 not only for the jailbreak but because my phone ran so much smoother on the firmware and I would love to go back to those days. I am willing to do a lot with my phone to get it back the way I want it
     
  2. J. A.

    J. A. Super Moderator Staff Member

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    Welcome to iPhoneForums!

    It's impossible to downgrade to iOS 9. That software is not signed by Apple any more. You'd have to use iTunes to revert to a previous software version. During the process, iTunes is connected to Apple's servers which make sure you install the "right" one (signed by Apple, which are 10.2.1 and 10.3 at the moment). If you try installing another iOS than the ones mentioned, you'll get error 3194, and it will be impossible to proceed.
     
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  3. Googlyspockuser

    Googlyspockuser New Member

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    I feel that there is always a way they have Prometheus, tiny umbrella, and many more tools that help with downgrading to any unsigned software. You mean to tell me that there is no possible solution like using a masquerading an unsigned software with a signed one??
     
  4. J. A.

    J. A. Super Moderator Staff Member

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    No, there's no way to masquerade software.
     
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  5. scifan57

    scifan57 Super Moderator Staff Member

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    None of those tools are of any use in downgrading to an unsigned version of iOS.
     
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  6. Googlyspockuser

    Googlyspockuser New Member

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    Prometheus is used for downgrading 64 bit devices to a lower firmware and tiny umbrella is for 32 bit, tiny umbrella is used for saving SHSH blobs and downgrading.
     
  7. J. A.

    J. A. Super Moderator Staff Member

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    Tiny umbrelly was used for this, that's not possible any more. Prometheus cannot be used to revert to iOS 9.
     
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  8. zstairlessone

    zstairlessone Well-Known Member

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    Try iOS 10.3, my 6S Plus is much faster* now.

    *sure feels faster and is much smoother, your mileage may vary.
     
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  9. Googlyspockuser

    Googlyspockuser New Member

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    Isn't that the update with the new APFS?? Shouldn't that slow down the device slightly or how does that work??
     
  10. J. A.

    J. A. Super Moderator Staff Member

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    Exactly. That's the update with the new APFS.
    From what I've read so far, it doesn't slow down your device. On the contrary. And it will free up a little bit of your storage space on the iPhone, up to 7.8 GB, depending on your device.
     
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  11. Googlyspockuser

    Googlyspockuser New Member

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    Does it delete old firmwares from your device?? How does it not slow it down, people have does geek bench runs and the phone goes not much slower, but slower nonetheless. Just watch EverythingApplePro's video on it.
     
  12. J. A.

    J. A. Super Moderator Staff Member

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  13. scifan57

    scifan57 Super Moderator Staff Member

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    Old firmware versions are not on an iOS device, they're deleted after the successful installation of a newer iOS version. New iOS versions can be more CPU intensive and can require more RAM to run smoothly. It is because of this and other things that newer iOS versions will be at their best on the newest devices.

    iOS 10.3 brings performance improvements to any device capable of running iOS 10.2.1.
     
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  14. Googlyspockuser

    Googlyspockuser New Member

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    Oh that makes so much more sense than what I was thinking about when you update because every time I deleted all my saved data and factory reset my iPhone I always wondered why it didn't downgrade as well. But now my long lived question is answered
     
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  15. Googlyspockuser

    Googlyspockuser New Member

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