TLDR: trying to understand whether decrypting Android 9 FDE off-device is possible, and/or whether the factory reset upon unlocking the bootloader will change TEE keys in a way that will make on-device recovery impossible.Backstory: My 3rd grader reset the screen lock password/PIN on a Lenovo Tab M10 HD to a long string of numbers that he can't quite remember. It's down to 8 entry retries until it does a factory reset. There are some files we would like get off the device...Read more