OK, this is very unimportant and almost off topic, but
I did install some time ago just for fun on one 66i the app IridiumWhere
Nice small toy, in fact for nothing, but can be installed from the garmin IQ store. The app is supposed to approximately show where the next satellites (iridium) are located with relative respect to own position.
But now it says unusable as the data base is old. This is true. But how to update the data for this?