Apple Watch Firmware Problems: Can Apples iOS 15 4 and WatchOS 8.5 Fix it?
It seems that the firmware file from apple is corrupt in some way. This issue can be resolved by uninstalling the antivirus software on your computer because such security software blocks the installation of firmware sometimes. After you uninstall antivirus software, the issue “The iPhone could not be updated/restored because the firmware file was corrupt…