On the HB support site for my unit, it lists V. 6.640 as the latest update for my older unit. I downloaded it and installed it. Now my temp gage is 25 degrees too cold and the ranges for the GPS switch randomly. Is this the correct update for my unit? I looked at the current updates on this site for my unit and it shows V. 6.600 as the latest available for this unit.
PS- When I have the card with the update on it installed at power up, it asks if I want to perform the update. Is this because the original update didn't complete, or is this just not compatible with this unit even though the HB website shows it's the most current available update for this unit?