*#7780# - Reset to the original settings; some informations are also deleted and need to be re-entered.
*#7370# - Soft format - this will resets all the phone memory (like re-format a disk); make sure to have full battery charged !
[Green]+[def3]+[*+] during a power on performs a hard format : this will return the phone like you have received; make sure to have full battery charged !
ok, ive tried the last one but i cant get it working do anyone knows how to perform the hard format??