Ive been given a SE K850i which has been unlocked BUT still has the O2 firmware on it. I want to drbrand it but Im struggling to get get what I need. I have downloaded and installed A2 and have the generic fw. I need an FS file whatever that is, I dont know. What else do I need and where can I find it?? I know I need this FS file. Can anyone help me wityh this and link me up to the correct files I need. Ive trried looking but its like looking for a needle in a haystack. Thanks in advance guys