Hey fellas! I got a 2012 Silverado I just put back to stock and went to use my old EFILive autocal to tune it back to stock (had it dyno tuned with hp tuners) and it got a operating system error code $0540 so I looked and hp tuners changed my operating system to 1250237. Is there anyway I can change my ecm operating system to a gm operating system without towing it somewhere? Maybe a bench tune from anyone? It’s an e38 ecm. Thanks!