[no_name]

1. Your serial use to be one that it can let you use Diagbox versions after v5.29 ( one of the serials are not alloed to be used and for this there is a solution to change the S/N )
2. Each version of the Diagbox it is using a diffrent firmware version. So you need to flash your tool with that firmware version only )
3. You have to plug the interface to the car and then to the USB first. Then turn the ignision ON. And in the end start the Diagbox and do a diagnostic.
4. PSA Interface checked cannot be installed near the Diagbox.
5. Maybe there is hardware issue and you have to check it in a few other diffrent cars to be sure of this.
Good luck

Thanks for answering and for ur time!!!
I am using virtual Diagbox v07.855 and firmware 4.3.7 on it, I have tried earlier version on win7 directly, same problem, I have another non full chip that is working ok on both...

I have used processor pcb and checked via usb on PSA interface checker and this is picture of it, and also prtsc of version that i am using...
But still can you please tell me what is right firmware for this version, and also how to change SN number, and can I do that via processor board and usb, or it must be complete and on obd power also?

Thanks in advance!