I have the 840 Solar. I have the EU maps installed, I have removed the US maps after previous issues. But I have an outstanding update for the EU maps that will not install. Multiple times I have tried, but it gets about 35% of the way thru the download before I get an error "There was an error installing the update". This is beyond frustrating. A 600 euro device that cant be updated, I assume because it is out of storage space? Any ideas how to fix this?