Problem:
Trying to do an Xhorse vvdi key tool plus DB15 self-test but failed. Any advice?
Solution:
When doing DB15 self test, don’t connect any cables/adapters.
If still the same error, there is something wrong with the device. You may need to send back for repair.
Better back up data via USB before sending back to dealer.
Read also:
Xhorse VVDI Key Tool Plus Self-test FPGA Certification Error Solution