Hey guys after spending a year crashing my Navi screen, I think I figured out why some CF cards don't read or crash your Navi screen. I just traded my generic 4 gig card for a SanDisk 2 gig and it still doesn't work, I'm pissed it was NTFS formatted too.
The CF reader is very picky on the Honda Navi, when you buy a CF card, it's already preformatted to FAT, FAT32, or NTFS.
You must format it on a card reader to FAT32. After doing that and maxing out my CF card, it reads like a charm.
I use to think it was the heat, cold, or brand that was junk, come to find it was the way it's formatted, not all cards are formatted as FAT32.
Hope this helps.