Quote Originally Posted by Nick Fly View Post
I know this is an old thread but I'm currently having the same issue. I recently bought a Flashscan V2 and I scanned the tune off my E38. I know the tune that was on my E38 was a diablo custom tune. I took that tune and disabled one check engine light and tried to re flash the updated tune back to my ecu. I did a Full Flash. Should I have done a Cal flash? Either way I got the same error in the title and now my truck won't even try to start. What should I do? Any help will be greatly appreciated.
Please retry the flash operation.

Tune files that have been incorrectly modified by other tuning packages may contain information that prevents the correct calculation of the checksum. Please open the tune file and search for calibration B9999 “Flash Checksum Fail Fix”. If that calibration exists, follow the instructions in that calibration’s description and then retry the flash operation.