This system update is suitable for the units ordered before Dec 7, 2009, it will
Enable
"
M
"
button when in navigation mode
(Use this button to switch from navigation screen to main screen)
Correct time of auto switch to backup mode from 3-4 seconds to 1-2 seconds
How to download and update
Download and update instruction
MSD-01-00191900.msk
GO790/GO790RV/GO790WRV Operation System Update
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