It will show if you want to upgrade the versionĥ. Simply tap the GarminMobileXT.sis to install. Copy GMobileCard contect at the root of your memory card.Ĥ. Extract the installer using WinRar or WinZip.ģ.
Since I had hang issue with ver 5.00.40, I decide to downgrade my 5800 XM to 5.00.30. New release by Garmin on their Mobile XT product ver 5.00.50.