Aqui se explica como cambiar las letras de desbloqueo del chino a otro idioma...pero mi ingles es muy malo.
A ver si alguien lo lee y lo sabe hacer y nos enseña
You need to get the IphoneLockScreen.apk out of the system/app folder on your pc. Rename it to iPhoneLockScreen.zip and umpack it. inside you'll find the PNGs for the sliders. Change them, re-pack it, change the name back to iPhoneLockScreen.apk, copy it back into the system/app folder and change the permissions of that app back to rw-r-r (see picture). Reboot the phone. For all of this your phone needs to be rooted.
http://3.bp.blogspot.com/-KF72aua1K2...ermissions.png
http://3.bp.blogspot.com/-KF72aua1K2...hotPermissions
3.bp.blogspot.com
