ERROR: Failed due to multiple communication errors.
This error is returned in case that connection between box and target device is unstable.
- Badly connected/soldered
- Bad ribbon cable
- RTCK/TCK sampling rate too high
- In rare cases, target device is malfunctioning, or it's powered off.
First (and easiest) solution to try is to lower down the sampling rate:
If this doesn't help, user should check connection cables/soldering/JIG.