Have a 2002 LB7. Read the tune out fine. When trying to activate the new license to flash it, I keep getting the $0544 serial number invalid code. The VIN is normal, the serial number is 00000000000. Anyway to get around this or is the ECM trashed? I've had the corrupt ECM in the past that I could not read with wack VIN numbers, never saw this before. Any help would be appreciated