iPhone 12 not updating to iOS 17.7 or 18

Hi, so as the title says my IPhone 12 won’t update to either iOS 17.7 or 18. The updates download and install but after the phone restarts to complete setup it still says 17.5.1. Any ideas?

For help with updating to iOS 18, please post in the Apple Support Community. The Apple Developer Forums are for questions about APIs and features intended specifically for developers.

iPhone 12 not updating to iOS 17.7 or 18
 
 
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