Bac-l21 8.0.0.331(c185) not support?

Build number: BAC-L21 8.0.0.331(C185)


Chimera Mobile Phone Utility version: 18.63.1718 @ 2018-09-09
Printing phone history

Get Info
9/9/2018
9:24:51
AM

Unlock / Relock Bootloader
9/9/2018
8:56:18
AM

Repair IMEI
9/9/2018
8:55:10
AM

FRP Remove
9/9/2018
8:16:51
AM

FRP Remove
9/9/2018
8:06:15
AM

Unlocking Bootloader...
Searching for manufacture port...
Testing connection...

Checking Bootloader lock state...
The Bootloader is locked.
Authenticating...
This may take a while.
Be patient! Do NOT disconnect the phone!
The device sent an invalid challenge.
Retry 2/5
The device sent an invalid challenge.
Retry 3/5
The device sent an invalid challenge.
Retry 4/5
The device sent an invalid challenge.
Retry 5/5
The device sent an invalid challenge.
Authentication with the device failed.
Finished at local time: [09.09.18 02:26:44]
WorkID: 43819473