Sony NAV-U NVD-U13E NAV-U NVD-U13R Operating Instructions Manual page 6

Selecting where to place the map data
For NV-U71T/U51 users:
1
Select "Transfer New Maps" from the Main Menu.
2
Select "nav-u Internal Memory."
Note
The transfer destination can be set only to "nav-u Internal Memory," and the existing
map data will be replaced.
For NV-U93T/U92T/U83/U82/U73T/U72T/U53/U52 users:
1
Select "Transfer New Maps" from the Main Menu.
2
Select the transfer destination of the map data.
Note
The existing map data will be replaced when you select "nav-u Internal Memory."
3
If the transfer destination is set as "Memory Stick on PC," select
the drive corresponding to the "Memory Stick."
6