ANE-LX1 IMEI Repair problem P20 Lite

I try 3 times. I did Factory defaullt and always the same problem:

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: [11.21.18 14:15:27]
WorkID: 47930097