You can make your own custom roms just using winrar. You can delete or change what you want, eq framework-res.apk, bootanimation, fonts, default apps etc... (but dont extract zip, just change files directly in it or the signature of file will be lost)
Moreover if you deleted some system file and your phone crashed, you can repair it by using our update.zip file. Just download it, delete all files which you dont want to restore in the phone. The rest of update.zip flash via recovery and you phone will live...
This is the team work of bbooff (your thanks go to him) and me.
source - www.xperia.cz
more than 200 videos with Sony Ericsson XPERIA phones - http://www.youtube.com/jozacmar
You cannot install this zip through nAa's recovery, you hawe to use recovery provided in kernels
download - https://rapidshare.com/files/4778127..._with_root.zip