Functions are permanent for your tool. It's one of the CHEAPER tools that autel sells. Makes no sense from a company's point of view to add extra functions when they sell higher end tools that do more. As far as adding bluetooth? Maybe, but then autel would have to sell a bluetooth adapter and send new software to your tool. Could be done, but they won't do it because they sell a 808bt model which is bluetooth. Not sure why so many people ask here that autel should give more options to CHEAP tools they sell. If Autel did that, I would fire whoever agreed to do this. Because the high end tools would be worthless and no one would buy them.