For installing custom ROM, you need to compromise on device secure features like encrypted data with locked bootloader. widewine L1 certification would be permanently lost. selinux risk etc.Hello. Please some other questions. If I unlock the bootloader with the ASUS unlock utility I loose all data in the phone and after I can nstall your Android 11 ROM and than I can recover my data and Apps from my Google account during first boot.
1. After that I can resume the Max Pro M1 with the ASUS original Android 9 or 10 and with the bootloader Locked like It was before installimg your ROM and how?
2. What Apps or functiionality I loose with your ROM that I have with ASUS ROM?
3. I can install your ROM with the ASUS recovery utility or I must substitute it in any case with TRWP?
4. Because if I want come back ti ASUS ROM I must restore ASUS recovery utility to male the phone exactly like It was before your ROM?
First you need to unlock bootloader using unlock utility and there by it will format your data and also may wipe OEM widewine L1 keys.
You can switch to stock ROM anytime by fastboot method and it will fresh start. data backup not possible on stock ROM because of stock recovery limitations. To use TWRP on stock ROM, bootloader need to be unlocked and disable dm- verity. Using stock rom on twrp is similar to using custom rom with compromised device security.