w580i cid53 debranding - Please help

I am using w580i for last one year. It has AT&T SE, but its unlocked. Now using with Tmobile.

So i am not asking for unlocking. I want to debrand it.

I tried the xs++ tool, but the version i used said the phone is not supported.

I was trying to see which one would work, obiviously i am googling and searched this forum and ended up with many files and confusion as end of 4hours search. Its my first time to flash a firmware but i am not new to mobile concepts.

i need,
1. The tool which i should use to debrand [w580i cid53]
2. Files needed to flash my mobile.[fbn, mbx,custom....]
3. How to backup my existing state of my mobile. [I have the sony suite and i backed up once with PC]

Any help would be extremely appreciated.

you can make backup of your data using My Phone Explorer, and for CID53 phone please read this carefully : Flash K800 CID53 with K810 software CID53 (for begginers) - Top Sony Forums but use files only for W580.
Also plz post log from xs

riders4sia - Thanks for your fast response.

I am having the files downloaded from a post for w580i. How can i make sure these are latest? is there a place should i look?

W580_R8BE001_FS_AMERICA_2_RED52.fbn
W580_R8BA024_MAIN_GENERIC_LA_RED52.mbn

Also is there any other file should i download?

yep, the custpack which is the most important to debrand, use AMERICA_2 custpack for your phone(W580)

Wow it worked like a charm!

I am uploading the files - so anyone who want to flash W580 can use these files and get it done!
Megaupload link
htt p:// ww w. megaupload .com/ ?d=LAJZNKTG

(Just remove spaces. I am not sure whether i am supposed to paste links).

Just follow the instructions for JDFlasher and use these files. Excellent!!!!

CID 53.rar containts the following folders..

FAR_JDFlasher_53
W580_CDA102568_107_R8A_GENERIC_AMERICA_2
W580_R8BE001_FS_AMERICA_1_RED53
W580_R8BE001_MAIN_GENERIC_LA_RED53

video tutorial
[URL="http://www.youtube.com/watch?v=7K34TsjDlLI"]YouTube

Happy christmas!!