Originally Posted by SCflyer
See bottom of page. I found this through the garmin site, marine units page at the bottom which directed me to the site above for the download stuff to correct possible problems with xm wx using the GMX 30 series and up antennas.
I have a 478 and ran the garmin web updater software and it says I'm fully updated. Is that really correct?
btw, xm is running their free service for a couple of weeks for prior customers ....