I went to flash a 6.7 today and I got the error $0502 which is pertaining to the auto cal not being configured correctly. I went to V8 to go though the config again and there screen is blank to config the auto for what controllers I want to be able to read and flash. I had my v2 hooked I have done this one duramaxs with no problems and went to do this on a 6.7 cummins and got the 0502 error message.