About JCV.
TSM v10 is made by ESRI into 2 versions.
Thai and Eng font.

JCV is only in Thai version.
Thai version is built in gps unit that come from ESRI.
For other gps unit can get only ENG version from ESRI...about 4,500 thai baht.

ESRI sell Thai ver for their customers only.

If you want to use JCV.
You have choices
1. buy GPS unit from ESRI but in Thai font !!
2. Download TSM v10 Thai ver., Thai keyboard and Thai font into your gps unit and routing with Thai format !! You may use 2 in 1 TSM EN and TH map.