You have probably seen the manual I created. Could you please provide me
with some keywords/documentation on your entire setup and the WinUSB.sys/inf
configuration?
we at sysmocom do not do electrical testing with the flex cables and so
far we have had only one defect (the PCB was soldered off-by-one to the
cable). You mentioned you made a continuity test and it worked. Have you
been able to see what is wrong with the cable? Feel free to use the webshop
address of sysmocom to report the defect (if any).