Use a reliable J2534 pass-thru device or an OBDLink EX for a stable connection.
Corrupted download or incomplete write. Fix: Re-download the firmware files. Erase the PCM completely (using "Firmware Reset" in the advanced tab) and reflash. forscan pcm update
If you live in a remote area, you can download firmware files on a friend's PC using the FORScan Firmware Download Tool. Transfer the .vbf files via USB stick, then in FORScan, choose instead of online. Use a reliable J2534 pass-thru device or an