If i was in a foreign country,let's say Aghanistan,would i be able to download features that would enable me to navigate on and off road in said country?

Tech Specs:

Material:

plastic 

Dimensions:

2.3 x 7 x 1.6 in 

Antenna:

external 

Routes:

20 

Waypoints:

500 

Mapping:

yes 

Digital Compass:

yes 

Computer Compatible:

yes, serial 

Waterproof:

yes 

Battery Type:

3 AAA 

Battery Life:

14 hours 

Expansion Card:

no 

Weight:

7.6 oz 

Recommended Use:

cross-country navigation, communication, locating yourself or your pals, predicting the weather 

Manufacturer Warranty:

1 year