Apple stops signing iOS 14.7 preventing downgrade from 14.7.1. Apple typically stops signing older released from time to time. iOS 14.7.1 contains significant security fixes.

Reference: Apple Stops Signing iOS 14.7 Following iOS 14.7.1 Release

Recommendations

Developer:

Keep 14.7 devices from updates, if needed.

QA engineer:

Keep 14.7 devices from updates, if needed.

PM/DM:

Business as usual.

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