Need help with rom P550B

[Guest masterkeybr]

I have a MIO P550B and after update with rom: "Osc260A R05_P09" have troubles because has differeces between P550 and P550B (screen not centralized and audio too low), but before to update i made a backup of my original rom ("Oscar 270a_ut_r02" - Portuguese) the format is raw :

part00.raw, part01.raw, part02.raw and part03.raw, now i need to recompile on format nb0 but i dont know how to do. Someone can help-me ?

my original rom (link) : http://www.megaupload.com/?d=ZLPCD3AO

thanks.