yes, you are right, I have bought it in US, when in Indonesia, someone help me to make it Indonesian device, the damayanthi worked, but after frozen and I use kunix technique, damayanthi won't work. thanks neil, I'll try your way.

@dasilvarsa : no, I can not update my device, there is always warning like this : "there is no update available for your products" when I use updater.exe