Samsung B5310 lockcode done Multiloader ver.5.62 lattest
Tool
(Nokia 5310 orig) mini usb
Procedure
: open multiloader ver.5.62
: download mode the phone - volume down+camera+power on
: connect usb mini to the phone
: select the firmware model
: search port
click download wait until phone flash complete
http://www.4shared.com/get/auQ6-tU7/B5310DDIK5.html