thanx for this great trick, but does not work for me… Using OsmAnd 3.9.10 from F-Droid.
I added gearth as an overlay map, but nothing is shown. When using gearth as map source, nothing is shown either…
Exactly followed your instructions.
Please be sure to enable the online maps plugin: Menu > Plugins > Online maps: enable
And of course you have to be online
I also tested your approach with using googe earth as map source, works as expected, you only see the sat image.
I’m using latest F-Droid Version 4.0.9, not sure if this may be a cause, I do not think so.
Expire configures how long to cache the map tiles. Shorter expirations lead to more frequent updates but also increase the amount of data to fetch from the Internet. So yes, the map will be updated automatically.