Solution Nexus7 Pre 2013 old version Android 5.1.1
Highlight (press and hold) and double taps are used often.I had to re install to erase all my futile attempts. Any maps that are not already in the chart downloader seem to only work if installed on portable memory, flash or SD worked for me, and doing all the directory building and file placement in the windows environment
, then I used the nexus media importer app.
Happy to walk anyone through that first successful map install.
Now off to Belize
to learn up. For someone who never gets deep into chart plotter options or is really not interested in winning the race
, I am liking this.
Thanks to all.