Anyone knows about GSM XT910S Korea? I have just bought Razr, XT910S. I am worried that can it use XT910's ROM? Is this version different from normal XT910? Can I up XT910's cook ROM for XT910S? Please answer because I don't want my phone can not be modded. Is it necessary to return and exchange for a XT910? Sorry for my bad Eng, Thks.