iPhone 12 pro max screen is unavailable trying to update and restore through iyunes but wn
iPhone 12 pro max screen unavailable fails every time to restore and update
iPhone 12 Pro Max
(< iOS 15.2) See this Apple article: If you forgot your iPhone passcode
If you forgot your iPhone passcode - Apple Support
(iOS 15.2 and newer)
How to remove your iPhone, iPad, or iPod touch passcode without a computer
How to remove your iPhone, iPad, or iPod touch passcode without a computer - Apple Support