Blackberry Q20 Classic SQC100-1 Remove BB Protect Failed…

[BlackBerry Protect remove procedure started.]
Phone is in loader mode

Updating software.
Phone is in loader mode
Connected to loader
Querying meminfo

Downloading files
All files downloaded.

Flashing file
Parsing file
Start flashing
USB send failed: A device attached to the system is not functioning.
Finished at local time: [07.10.16 22:08:53]
WorkID: 11976893