I have an M60 as well. I have had a few High Voltage related error messages occur and the local BMW service center did install software updates to two major control systems. I asked why neither the app or vehicle were telling me to get updates and the response is that I would only be told about two types of updates, "comfort and convenience" related updates to the iDrive system and EPA mandated recall updates. IDrive updates occur once or twice a year and are over the air. EPA updates, if any, are addressed on a case by case basis. Updates for the system control modules (like mine and most likely like yours) will only happen by dealerships and the only way to determine if they are needed is to have a dealership do diagnosis. The good news is my M60 continues to do great and I have not had the High Voltage system errors since the updates. Like you say, we are all beta testers and this is the price we pay to be bleading edge!