Debrand C905 for AT&T

[senter]

Just recently got a C905 for AT&T and I want to debrand it (so Wi-fi will work).

I tried Code Claw, using GENERIC AMERICA to create a customize_upgrade.xml. but SEUS keep telling me that my firmware is up to date.

Should I be selecting a different zone than GENERIC AMERICA?
Or must I install the firmwares directly with A2UPLOADER?

If I must install the firmwares directly with A2UPLOADER, what files would I need?

Not really sure which I need to use for it or even if I'm doing the right thing.

Help?

Use A2uploader from here: a2uploader and CID53? - Top Sony Forums
And these files:

C905_R1DA032_MAIN_GENERIC_SI_RED53
C905_R1DA032_FS_AMERICA_RED53
C905_1209-4760_R6A_GENERIC_AMERICA

Screenshot: