Successful Debranding W580i

[BAGMAN]

k, what you're talking about is not debranding
it's just replacing the operator's firmware with a generic one
debranding means removing simlocks that don't allow to use your phone with different operators
i know that it allows you to use mp3 files as a ringtone, but did you actually try to use sim cards from different companies after you have "debranded" your phone?

You are talking about unlocking a phone. There are different threads int he forum discussing that topic.

We are talking about debranding a phone, which means to remove all of the crap and restrictions set in the phone by certain providers by setting the firmware back to factory settings that sony would have setup.