I ran across this the other day, I had one of the terrain cards that had been bricked after a bad update. If you haven't thrown yours away there's a way to repair it, it seems to work for me as the card is recognized but apparently I can't reinstall the terrain database because I already put the current cycle on another card(yay copy protection).
https://garmin.ent.box.com/s/wd15jt5lumjrxgxtx4283y5rlp58kqxl
Right click, download, unzip to a folder.
Plug in your reader and insert card.
Run the CardRepairUtility executable you unzipped in the folder.
It should recognize the card, click Repair Datacard and let it do it's thing.
That should be it, the garmin db manager recognized it and I was able to update obstacles. However I got errors when trying to do the terrain DB... I am told this is because garmin won't let you update the same cycle to two different cards- basically a copy protection scheme. Supposedly you can call them and they can reset something so it works. *sigh*. I was thinking about getting another nav data card so I could update them at home and swap when I got to the airport.
https://garmin.ent.box.com/s/wd15jt5lumjrxgxtx4283y5rlp58kqxl
Right click, download, unzip to a folder.
Plug in your reader and insert card.
Run the CardRepairUtility executable you unzipped in the folder.
It should recognize the card, click Repair Datacard and let it do it's thing.
That should be it, the garmin db manager recognized it and I was able to update obstacles. However I got errors when trying to do the terrain DB... I am told this is because garmin won't let you update the same cycle to two different cards- basically a copy protection scheme. Supposedly you can call them and they can reset something so it works. *sigh*. I was thinking about getting another nav data card so I could update them at home and swap when I got to the airport.