How to import t4a to basecamp?

[m0lt3n]

I recently bought a zumo 660 with t4a and am now trying to import it to basecamp. No luck.
How can I use it on basecamp?

Sent from my GT-I9300 using Tapatalk 2

 

[CharlesS]

 

[NeelsK]

 

[heti]

 

[m0lt3n]