I'm trying to upgrade my OSTC3. I finally get connected on both computers runingo on WIN8 and WIN10, but I have same problem.
OSTC3 stay connected, but an error has been rejected: "Not an OSTC3" - on OSTC Companion
[Yes I did double check, that I have OSTC3

On OSTC3:
Starting ...Done
Service mode enabled
Please help me.
Second question. On my user manual I have explanation how to connect OSTC3 via USB port...but my OSTC has no USB port - ?
Please help me again...