I have the latest builds (211 & 203) and firmware in my V2. My friends car is a 2003 Corvette running OS 02030001. I read out the tune and changed Long Term Fuel Trim from 'Disable' to 'Enable'. When I tried to BBX the tune back in, I got an error on the V2 about the OS 2030001 not compatible (or something like that). I don't have the car here. This is the first time I've tried to flash a COS and was wondering if I have to Full Flash the change or use the laptop instead of stand alone?
Thanks.