Oh-Oh. Looks like Garmin has been working over-time on their anti-piracy scheme.

Yes, you can downgrade, or never upgrade, your software, but the upgrade truly does "fix" some problems we want fixed on our units.

I am hoping the extremely talented and intellegent people here can investigate and figure out exactly what Garmin has done to lock out hacked maps.

If they have figured out a new way to authenticate maps on these handheld units, they will, for sure, apply the same technique to the automotive units as well.