A: Yes, in most countries. UnlockTool modifies the system partition and security zones. Manufacturers like Samsung can detect this via Knox eFuse.
If caused by longjmp/exception:
If due to cross-language mismatch:
If memory corruption:
Some Samsung models (A series, M series) and Xiaomi Redmi Note devices have known bugs where the activation record is stored in an alternate partition (e.g., /metadata or /persist) instead of the standard location. UnlockTool’s script fails to map this. activation record does not exists unlocktool