y9 2018 bootloader unlock failed....

GSM-Forum

y9 2018 bootloader unlock failed....

Chimera Mobile Phone Utility version: 18.48.1316 @ 2018-08-29

Printing phone history

Unlock / Relock Bootloader
8/28/2018
7:31:25
AM

Repair IMEI
8/28/2018
7:30:02
AM

Unlock / Relock Bootloader
8/27/2018
11:19:44
AM

Repair IMEI
8/27/2018
10:37:03
AM

Factory reset
8/26/2018
6:16:03
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: [08.29.18 11:34:44]
WorkID: 43178614