SEUS will mostly fail !! coz i hv tested this ;)

dude don't worry you won't loose anything. .. make backup off stuff using My phone Exp thing

when FS is flashed ... of course everything is cleared.. same applies for windows xp.. format new File system is created ..

Dude the S500 flashing guide is authored by me !! i bet you will love your phone drop dead after flashing to w580i !!

There is nothing to loose .. just go and flash it to w580i !! you will get lots of features instead. I promise you won't loose anything !!

The theme which will be cleared can be installed back again.

i hope i made your life easy ;)

best regards , akshay !