https://arstechnica.com/gadgets/2024/09/iphone-16-has-a-new-wireless-recovery-mode-for-when-ios-updates-go-bad/

If you've ever had an iPhone update go bad, you may have used recovery mode to resuscitate your device. A device booted into recovery mode can't do anything by itself, but it can be connected to a working Mac or PC with a cable, and that Mac or PC can download a fresh copy of iOS and all of your phone's related firmware to restore it to a factory-default state. You'll need a backup to recover your personal data, but it beats having to take a trip to an Apple Store or send your phone in for repairs.