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Can't update iPhone 6s

My phone is iPhone 6s and I tried twice to update os 15. Download, verifying , install were normally done and rebooted

but I checked the os is still old one(12.4) . Not updated, why like this?


[Re-Titled by Moderator]

Posted on Oct 25, 2021 1:48 AM

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Question marked as Top-ranking reply

Posted on Oct 25, 2021 2:52 AM

These are the iOS options based on iPhone Model --> You need to Identify your iPhone model - Apple Support

  • iOS 15.0.2 —> 6S / 6S Plus, SE (1st Gen and 2nd Gen), 7 / 7 Plus, 8 / 8 Plus, X, XR, XS /XS Max, 11,11 Pro /11 Pro Max, iPhone 12, 12 Mini, 12 Pro, 12 Pro max, iPhone 13, 13 Mini, 13 Pro, 13 Pro Max
  • iOS 12.5.5 —> Final release supported on iPhone 5S, iPhone 6/6 Plus, 

Learn how to--> Update your iPhone, iPad, or iPod touch - Apple Support


2 replies
Question marked as Top-ranking reply

Oct 25, 2021 2:52 AM in response to naje241

These are the iOS options based on iPhone Model --> You need to Identify your iPhone model - Apple Support

  • iOS 15.0.2 —> 6S / 6S Plus, SE (1st Gen and 2nd Gen), 7 / 7 Plus, 8 / 8 Plus, X, XR, XS /XS Max, 11,11 Pro /11 Pro Max, iPhone 12, 12 Mini, 12 Pro, 12 Pro max, iPhone 13, 13 Mini, 13 Pro, 13 Pro Max
  • iOS 12.5.5 —> Final release supported on iPhone 5S, iPhone 6/6 Plus, 

Learn how to--> Update your iPhone, iPad, or iPod touch - Apple Support


Oct 25, 2021 2:54 AM in response to naje241

VPN or proxy connections might prevent your device from contacting the update servers.

If you still can't install the latest version of iOS, try downloading the update again:

  1. Go to Settings > General > [Device name] Storage.
  1. Find the iOS update in the list of apps.
  1. Tap the iOS update, then tap Delete Update.
  1. Go to Settings > General > Software Update and download the latest iOS update.

If you don’t see the update in the list of apps or if the issue happens again, you need to update your device with iTunes.

Try updating iOS after each step.

  • Try Forget the WiFi network and add again
  • Try another WiFi network 
  • Toggle sets automatically off and then on
  • Reset your network settings
  • Force restart your device
  • Remove any beta profiles, if applicable
  • If everything fails: - Use iTunes or Finder (for MacOS Catalina+) to update your device instead of over-the-air


Can't update iPhone 6s

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