debranding my k750i, question about it

Hello guys, i just found out few days ago about this thing flashing, debranding stuff and i got so hyped about it, i wanted to buy a walkman phone or sony mp3 player but now i won't have to because i read you can turn k750i into w800i but i am not really sure how to do it, i've read guides and forums about it. So far the only thing i did was flashing with this file CID49_W800_R1BC002_MAIN_EU_EMEA6.bin by using xs++. The phone works fine and i have the WALKMAN in the menu and it works too, but i am not seeing any other new features. I see in some guides i have to put some FS file? And what else do i need to do or can i do to customize it from now on? I see there are drivers, icons, skins that change the appearance. Any advices/answers will be appreciated, thank you.