Doing some research as my knowledge of KPro is limited I can see this is a mod done to convert the standard ECU so probably not damage just a poor install?
J251 does seem to be blown but not sure this is required?
My original issue was laptop not recognising the KPro and driver issues, tried all the FAQ suggestions so thought I’d open it up and see.
The green light on the USB stays illuminated but the red lights flashes 3 times then stays out.