[Q] Update Asia XT910 from 4.0.4 to Vodafone.EU 4.1.2

view story

http://forum.xda-developers.com – Hello Everyone, I'm Noob with RAZR stuff... i was going through this thread from HSD_Pilot (http://forum.xda-developers.com/show....php?t=2188155) I currently have stock ICS 4.0.4 on AsiaRetail version. I have no root or anything. Can i directly use RSD to flash the 4.0.4 Vodafone.EU on my device and update to 4.1.2 Vodafone.EU by following the guide ? I dont need root, so is it mandatory to root or not ? If yes, do i have to root 4.0.4 Vodafone.EU and then update ? or Root AsiaRetail 4.0.4 then flash Vodafone.EU 4.0.4 and the upgrade to 4.1.2 with the guide and keep root ? (HowTos)