升級災難 2

係咪真係冇得 downgrade?
唔肯做同做唔到係兩回事
都唔明點解唔肯做
咁大間 Apple Store 咁多 Genius 都冇人識做?
我返到屋企就咁用部 iMac 又攪得掂?
唔通天才諗嘢係唔同啲?

iOS16

iPhone 11 upgrade from iOS 15.X to 16.03
Can’t boot up after upgrade 😵‍💫
Recovery to factory mode with iOS 16.03
Can boot up normally with iOS 16.03
Then restore backup from iCloud into iPhone 11 with iOS 16.03
Can’t boot up again
Tried severals times for recovery and restore but also failed
Seems something wrong
Give up and try to restore backup from iCloud to old iPhone 7 Plus
It works 🤨
iPhone 7 can work normally
Unfortunately, it can recover from backup but lost some 2FA apps config 🤬
And then try to transfer data from iPhone 7 (iOS 15.7) to iPhone 11 (iOS 16.03)
iPhone 11 (iOS 16.03) can’t boot up again 🙄

So, the problem is on iOS 16.03
The problem is:

1) iPhone 11 can’t downgrade to iOS 15.7
2) iPhone 11 with iOS 16.03 can’t restore the backup data
3) cannot use my data in iOS 16.03 via iPhone 11

What should I do?