I am having a problem with my 1490T Nuvi. I cannot get it to turn on. It is merely flashing the Garmin name at me and turning on and off. I've used it very successfully for 6 months and have kept the software updated. I cannot get it to turn on for more than 3 seconds.
I've contacted Garmin Support for the same issue, no help at all. I've updated my software to 4.2, which fixed the Micro SDHC card issue according to the support. I've tried 3 different brands, and none of them are working, here are the MicroSDHC I've tried:
AData Class6 8GB
Patriot Class4 8GB
SanDisk Class2 8GB
None of them are working on my 1490T, so either can't use 8GB or can't be SDHC.