Just received my sportsman from camera land. It seemed to work great when I first got it out. Pretty straight forward set up etc. then I feathered it to my phone and it did an update, not sure if that is what did it or not but now the compass is way off. I have calibrated it 10 or so times, changed batteries and reset it to default and tried again. For instance I have a 8 degree wind from about 15 degree, compass shows 170, I manually set it to show 15 deg, then direction of target true is about 90 deg, kestrel reads 146, I set it to 90. AB now gives me correct elevation but shows a Right wind age of .6. The wind age at minimum would have to be left. Any ideas how I can revert it back to original firmware to try?