So far I've followed all the steps to update the maps in my Kenwood DNX893S.
Inserted SD card to Kenwood, selected "Update Maps", it wrote to SD card.
Inserted SD card into Mac, started Garmin Express, at first it said no updates, but then it did.
It downloaded, I ejected card, stuck into Kenwood.
Kenwood Garmin said "Reading Maps", then popped up a blank screen with OK button.
Then unit rebooted for some reason.
Now it looks like the maps are bad, it's telling me they're still out of date, but I re-did the SD card steps and it won't download the maps again. Anyway to get the maps back?