atu l21 FRP unlock problem

[keremk]

DC - Unlocker 2 Client 1.00.1428

Detecting phone :

selection :
manufacturer - Huawei phones
model - Auto detect (recommended)

Found Phone : ATU-L21
Model : Huawei phone in fastboot mode
IMEI : 867266033266999
Serial NR. : 38R9X18B29W00575
Firmware : ATU-L21 8.0.0.154(C432
user Lock state is relock
fbLock state is lock
Image is origin
Verify mode is enforcing
Check root info is safe
Lock state is unlock
Root State: ROOT
Battery state: 4396mv

================================================== =================

Factory reset protection Erase start

Error 501


giving this log always

[Valdemaras]

Yes, android 8 and later not serviceable.