This issue is with the new firmware. I have had five of the gs911, I currently have two. One was updated one was not. The updated one doesn't work now. The unit worked Monday before the update. I worked on two bikes and reset the trip meter with the unit. I do the update and then the unit is a paper weight for the RT. So I used my older unit, which was not updated with the new firmware and BAM, instant results. I have been using the GS911 since the 3 pin model came out. Tech support is looking into it. I hope so, because the GS911 is used in every BMW shop I know. The old MOSS system was so bulky and now the new ISTA is a pain.