Hey guys,

My LBZ has efilive on it but I don't have any of the original license or hardware used to program it. I attempted pulling the tune in it with my new AutoCal V3 and we are getting a Checksum invalid under engine operation. 1st was error $0527 and now $0536

Is the only way around that to find a factory tune and re-flash and completely lose what is in it now? It won't let me apply the patch and full flash with the pulled program.

Thanks!