Voyager only updates Charts when they expire. The following steps will remove all chart types (TAC, SEC, WAC, HI, LO) from Voyager. This will force Voyager download all new fresh charts. 

-Quit Voyager if running.

-Make hidden folders visible
Open the 'folder options' control panel
Click on the 'view' tab
Select 'show hidden files, folders, and drives'
Click 'ok'

-Remove the HI, LO, TAC, SEC, WAC folders from
C:\Users\<your name>\AppData\Roaming\Seattle Avionics\Voyager\Scanned Charts\

-Using Data Manger inside Voyager or ChartData Manger application, download new data