Going from GM update from 24280476 to 24283067. I am trying to go back to an old OS to check a tune and it wont let me. It gives me an OS incapability error.\

Thanks,


Adam


PS. Also when I am not plugged into my EFI cable, it is now telling me I am in "demo mode." I have to reenter a code I know. If I can find my card. LOL It says "I'm not "authorised" to make changes. Changes will be discarded." Authorized is spelled wrong FYI.