Me again. I downloaded 3.67 just fine. Now it is stuck on the calibrate screen. I keep trying to reset and calibrate and keep getting the reply calibration failed. My TSU3000 NG is fully charged. I can't seem to find out what to do now but I am searching. From what I have read, people seem to be downgrading, but I had the other version earlier this morning and that didn't work either. Hum..what to do now?????? Any ideas???