If you observe a change in the conrtol unit number during testing, it might indicate a program error, and you should contact the after-sales department.
If you wish to modify the conrtol unit number on your own, follow these specific steps:
First, open the BTS 8.0 software and locate the intermediary device you wish to modify in the device list on the left-hand side. Right-click on it and select "Set and show control unit/tester."
Then, log in with the following credentials: User name: admin, Password: neware.
Finally, reset the device number of the control unit to complete the number modification.