database concierge

I installed a GTN 650 with a FlightStream 510 in June. Every time I try to update the databases, they will smoothly transfer to the 650 via Database Concierge, but then some randomly fail to go active On their effective date, giving the error message “Database corrupt or not active.” I spent...

I am getting a GTN 650 with a Flightstream 510. How much space does a Database Concierge update take up in the iPad for a US update of all databases included in OnePak? Just trying to see how much space Garmin Pilot will need on my iPad to use Database Concierge. Thanks.