Thanks to BOS I was able to quickly fix a problem with my Zero Off this morning. It wasn't picking up GPS. Found the diagnostics screen in the thing and saw both pucks were reporting failure. Checked wires, no joy, resorted to Google. That brought me, not too surprisingly, to a few BOS forum posts, one of which suggested disconnecting the battery to let the system completely and properly reset and then try again. Sure enough that did it. Just wanted to say thanks - it got us back on the water in under half an hour!