Wait a minute !! Your JCV page is for EU & US map.
I mean my3790US(with sg/my2.30 or CHN2.20) will show the jcv like your picture for EU&US jcv.
But if I use Sg/My., CHN., or other Asian JCV file then I will get jcv with lane assist overlay.

I think you will be happy if you have time so you can try it and you see what I said .
After that maybe you like to visit Thailand .., land of smile.