hi, my friend is on the latest malaysian firmwares which is LPB/LPA if not mistaken. and I read from the previous post saying the cf root for those firmware doesn't work. so i'm wondering

1)is it possible to flash the firmware back to stock lp9?
2)and then flash the lp9 cf root and then flash cm9 nightly?
3)if i want to flash the firmware back to stock lp9, do i need to root it or just straight flash it using odin?

PS: a never rooted i9100 sgs2. he itchy hand can't wait i help him flash and in the end update to a lpb/lpa malaysian latest firmware and now don't have any working cf root for it. >,<

thanks.

guys really...really need you hel here.my computer cant seem to detect my s2 even though the usb storage a;ready turn on,the orange android guy but my computer cant seem to detect the phone.the usb working since the phone is connected.even using other hp no use,my computer cant detect the phone even though mas storage in those phone are active and the phone recharges using the usb....please help!!!!