How do i rebrand my w580i to AT&T

My phone has started making some wierd noises whenever the LCD screen turns on and I need to send it for repair/replacement as it is still under the 1 year warranty.
However, i need to rebrand the instrument back to the default AT&T's firmware. I have ysed xs++ earlier to debrand the instrument. Can i use the same for rebranding it to at&t and what files will i be needing?
Also if someone can let me know where i can get those files, that will be of immense help.
Thanks in advance to whoever that can help me out.

Cheers!!

You can flash it just like you debrand. You need AT&T firmware and customize pack.
Downloads - Firmware - Top Sony Forums

Hi,

Thanks for the reply. But can you please let me know exactly what files i need. I went to the link you gave, but i couldn't figure out which files i should use.

please let me know.
Again thanks a lot for the help.

Cheers!!

Correct me if im wrong, but if you where to hook the phone up to SEUS and updated it through them then wouldnt that not only update the CID if there was an update but also return the set back to its original manufacturer settings ie Main and Fs?

I had an unlocked w580i through patch and when i updated it through SEUS (DUMB!!) It not only updated it to CID 53 but also rebranded the handset back to Orange.

No, actually SEUS just updates to manufacturer specifications, but cannot add the service provider firmware and custom packs.

W580i_CDA102774_102_R25A_ATT_USA.zip

W580_R7AC001_FS_CINGULAR_RED52.rar

W580_R7AC001_MAIN_CINGULAR_LA_RED52.rar



These are the names of the 3 files I used to ReBrand my w580i phone, then took it into the store to get the Cracked Keys warranted.

Google them, you'll find them, FREE!!!