Checked obd by measuring connection fra serial to obd as it can’t be opened. All pins came out positive in obd.
Post the PCB…Here comes pics
Tried Vag, BMW
After resolder it could only read bsi on a Peugeot 307 from 2001.
It was can as i use can with pp2000.
First check the cables and the soldering of usb plug on the board mine did lose and had same problem chinese do solder it with eating sticks
Solved! First see F1 (small fuse), try restore point.
Resoldered a few points and it worked
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