Need help:
I searched all the tutorials and used search function extensively, however could not find a solution, so please forgive me:
Zumo550
Sd card 8GB
Downloaded 2015.20 NT unlocked image to SD card
In BC it shows that the map is installed on sd.
However map does not show in Zumo unit.
I use patched version of BC.
Renamed img file on the sd to gmapsupp.img and is placed under folder garmin.
file size is 3389.312. (<4Gb)

Thx to anyone who is willing to help.