HTC8s not update firmware to 8.1

[Nus Manus]

My phone got struck at version 8.0.10211.204 (i live in Thailand) , I tried to update firmware from device setting but its still not update to latest version then i can not use Developer Preview for update too. Someone can help me solution for update that i can use Developer Preview please,Thank you.

*ps. someone who try update firmware with VPN network yet? is it work?

 

[windzzz55]

Not been updated as well.