load time begins low then rises - Garmin 276c (512mb card) then crash

Two of us have Garmin 276c’s and have used this mapping successfully before - now we are both getting huge load times for the maps - mostly never loading. Initial load time will indicate 7 hours for the regular routabe maps ( 475 mb for 522 card). Then it will rise to 30 hours or more…and simply never load…any ideas…want to go riding!

Cross-forum post. Closed.