Rne-L21 Repair Error

Hi I have Mate 10 lite Phone I tried with 2 different chimera. Not Work
43531841
43532255
Try 1.......5 Not another functions FRP Factory reset Repair.


Printing phone history

Repair IMEI
04/09/2018
11:12:34

FRP Remove
04/09/2018
11:10:35

Repair IMEI
04/09/2018
11:08:10

Repair IMEI
04/09/2018
11:06:34

Repairing IMEI(s)...
Searching for manufacture port...
Testing connection...
Checking IMEI(s)...
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: [09.04.18 14:15:37]
WorkID: 43532255