Debranding w880i

[47.46.45]

Hi guys,
I live in Australia. Have recently purchased a w880i, which was branded and locked to Vodafone. I had the phone unlocked, so now I can use it with Telstra, but it still has all the Vodafone screens, menu options etc.
Unluckily, nobody in Australia can debrand phones. I am tech savvy enough to do it myself; as far as I can tell, I will need XS++, two firmware files and the data cable that came with the phone. Is this correct?
Also, which two firmware files should I use? I don't care whether it's the newest version, just as long as it's generic and works in Australia.
Cheers.
-S

Update: I just worked out how to check my Software info, I currently have:

R1JC002
prgCXC1250641_VODAFONE_AI R1JC002

EROM: R3A016
prgCXC1250614_EROM_DB2020_AI_FOTA_SIMLOCK_FLAFLA_S IBLEY_SEMCUSB

Update2: I'm considering installing W880_R8BA024_MAIN_GENERIC_AI_RED52, does that sound about right? Are all the different firmware distributions just language related or will I not be able to get coverage from AU carriers with this MAIN_GENERIC package?

[jasmin]

Look connect your phone to xs++ 3.1 and copy here your phone log.

XS++ 3.1 Guide-Flashing,Customizing,Recovering

Languages Description

CDA ( custom file description ) W880

I'm considering installing W880_R8BA024_MAIN_GENERIC_AI_RED52, does that sound about right?

This is ok.

Main: W880_R8BA024_MAIN_GENERIC_AI_RED52
Filesystem: W880_R8BA024_FS_APAC_RED52
Custom file:

HB1-06_Gen_CDA102568_101_R8A_GENERIC_APAC,
Ai_i_CDA102719_64_R4A_Generic_Trade_Australia.

Nice day

[47.46.45]

All done, successfully debranded to generic AU.
The internet connectivity button is very easy to bump and I get charged each time it attempts a connection, is there anything I can do about that other than just be careful? It's in all the menus too.