hi download setool then go on 4shared.com and download the firmware for the phone and debrand it making sure you tick the bypass security patch then download farmanager and the se plugins and connect the phone and copy your flash themes over to the phones memory
i currently have a w880i and fully debranded and customised by myself i have flash themes new acoustics so my volume is much much louder n better camera drivers
if you still stuck search for a noob tutorial on google