So I've recently updated my GO600, and the larger system now means map storage needs to go on a micro SD card. Tried lots of different sizes - 16GB, 32GB all class 10, and it simply does not see the card. Bought a new card yesterday and reloaded MD Connect (on a Mac), and repeatedly restarted the nav, but nothing is seen. It's about to get launched into the bin and is useless in its current state. Any advice before a put a hammer through it?