I always updates GPS software using wizard of Land and GPS connected to PC.
After recent update there are several problems:

1. Battery charge never finishing. If I disconnect GPS from USB and try to switch on it, appears error TwoNav_Sportiva.exe not valid WinCE program. Tweaking battery resolves the problem and GPS works.

2. Additional SD Card with all data (maps, trails etc) not visible from Land, though the card and all data on it available for navigation in GPS.