Xrecovery is a tool that can be used to install new Roms, backup/restore your existing ROM,apply patches,batch install applications & many more things.
Its very easy to install and use.
1.Root your phone.
2.Install Root Explorer.
4.Copy xrecovery folder to SD card.
3.Copy 3files from "/sdcard/xrecovery" folder to "/System/bin"
5.Keep taping the 'back' (the rightmost one) button when 'Sony Ericsson' is displayed.
6.You will enter xrecovery menu.
1.To move around in xRecovery you use the volume buttons, to select an item you press the Home button (the middle one), and to go back you press the Back button.
2.Use common sense!
First thing to do - Make Backup!! - View Post