Xcode 12 4 Unsupported OS version after iPhone iOS update 14 7

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After updating iPhone iOS version to 14.7+, Xcode 12.4 can no longer build to that iPhone device.

In Xcode when choosing a Build Destination (Product > Destination > [device] or from the UI dropdown shown below) the newly updated iPhone will have beside it (unsupported OS version):

xcode build destinations dropdown

iPhone listed with "(unsupported OS version)".

unsupported OS version

Can't Upgrade to Big Sur / Xcode 12.5

I'm stuck on Mac OS Catalina (old hardware) and cannot upgrade to Xcode 12.5 which requires Big Sur.

How can we add/update device support to Xcode to build to an unsupported iPhone version (iOS 14.7+)?


 

Sep 22, 2022 in Others by gaurav
• 22,940 points
384 views

1 answer to this question.

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This might be a temporary solution but here is what worked for me:

  • Go into contents/Developer/platform/iPhoneOS. 
  • Copy your previous iOS 14.5 the device support file or older version.
  • Paste into the same folder and change the iOS number to 14.6.
  • Restart Xcode, and it should let you run your code on your phone.
answered Nov 4, 2022 by gaurav
• 22,940 points

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