hi, first time posting. thanks for all the great information all over. i have read carefully i think...

i have a gpsmap 78s. i want to load bluechart g2 HXUS039R
i downloaded the img.
unlocked with gimgunlock.
renamed as gmapsupp.img
placed in SD:\Garmin\gmapsupp.img
inserted. powered on. go to select map... nothing there. just the shiite basemap.

if it matters homeport 225 ******* sees it when the SD card is in my laptop and likes it....


so where did i fail?

thanks!!