I have an older style battery (round pins) that came with a p2 vision that was given to me. In the assistant software, it shows the battery loader as 126.96.36.199 and firmware as 188.8.131.52. It doesn't give me the option to update, but it seems as though others have updated their batteries to 1.5 loader with 2.0 firmware (after 2.6 became unavailable). I'm having battery issues and want to find out if I'm running the latest firmware, and if this is just another glitch with the firmware updater. I can send more info on the battery if this will help someone answer my question.... very much appreciated!