update iOS 15.4.1
Last night I gave the command to run the iOS update and this morning the phone was stuck with the words "check for updates". The phone is unusable can not even turn off and I can not do the forced reboot. tips?
iPhone 11, iOS 15
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Are you sure the Forced Restart did not work?
Forced restart Force restart iPhone – Apple Support (UK)
after that go here
If your iPhone won't turn on or is frozen – Apple Support (UK)
or see the process below
If your iPhone is stuck on the Apple logo - Apple Support
or watch this video
https://youtu.be/2CRilTPouRU?t=97
There is no guarantee you can save any data since your last backup if you need to use the Restore option.