Hi there, I would like to root my device which is currently on Three UK and infall a custom rom. I am thinking of installing the Venom ViperOne rom but everywhere i have read and watched, the tutorials have been for rooting US devices. Will i be able to use the Viper rom on my UK HTC One and use the rooting videos for US devices? Furthermore I would like to be able to return back to the factory settings at a later date just in case it needs repairs. I have read somewhere that i will need to flash the stock rom back on and reset the boot loader? is there anything special i need to do for my UK variant or will the videos using the US devices work for me? Thank you in advance for any help given.