async problem with X51v?

I never have single problem with my X51v
async is 4.1 Trad Chinese ver
I do this way
on Connection setting, I check all 4 options
on the 3rd selection, make sure which bt port you're using
on 4th selection, choose Internet

this should work for USB connection

on X51, open bt>Com ports
assign a COM port for your host, the port should be same as bt COM port on your host
when you're about go sync, go to async
Menu>connect via bluetooth
but it's kinda hit of miss, I have no prob with X51v, but I don't know why I can't make it work on HTC Universal (I-Mate Jasjar):bang:
good luck:approve: