Need C902 to look like O2

[Alien8]

Hi ..
Just got hold of a Sony E. C902 locked to 3G
Used Aerix to unlock my Sony C920 from 3G, and now I need to debrand it as its still has a few 3G bits left on it..

I wanting to debrand it to O2 as that is my main provider at the moment.
I want all traces of 3G removed from my C902..
I've downloaded a2uploader and have downloaded the following:

C902_R3BA035_MAIN_GENERIC_AO_RED52

Should I also flash it with the

C902_R3BA035_FS_HUTCH-WORLD_RED52 or

C902_R3BA035_FS_CENTRAL-EUROPE_RED52 or

C902_R3BA035_FS_WESTERN-EUROPE_RED52

[ I need it in English - uk ]

Custom Pack:
C902_1207-9853_R6A_O2_United_Kingdom

Do I need all the files, as its already unlocked now ?

On the phone in Software info it says:
1207-7427 R10A
1204-8246 R3B A 035 HUTCH-WORLD

Like I say all I want it to be is to look like O2 [UK]

So I need to confirm I have the right files..
Thanks... for any help. :)

PS isn't Hutch-World to do with 3G ?