I may be smokin something, but I could have sworn that when I first got my unit, it was assisted by gyro's and didn't rely strictly on the GPS signal. I used to have an N3 and if I lost my GPS signal, I could still get around, I drive in the mountains and lose my signal quite often and now my unit is useless until it can regain signal. Does the 90BT have gyro assisted nav or did mine just go out on me??

I may be smokin something, but I could have sworn that when I first got my unit, it was assisted by gyro's and didn't rely strictly on the GPS signal. I used to have an N3 and if I lost my GPS signal, I could still get around, I drive in the mountains and lose my signal quite often and now my unit is useless until it can regain signal. Does the 90BT have gyro assisted nav or did mine just go out on me??

According to the manual, F90 is supposed to have gyro and VSS connection...