I'm new to efilive and am working with a 2005 corvette. I have previously applied the MAF OS patch successfully and recently made changes to the calibration and tried to flash the new cal file but received a checksum error $06FF. I've tried flashing the original cal file and the one read off the PCM after the MAF patch before changing anything else but I still receive the checksum error. I have not tried doing a full flash of any of the cal files afraid I'll brick the PCM if a full flash does not take. Any advice would be appreciated. Thanks.