Hi SasHaM,
You can't simply use another eeprom dump on your phone even it is from same model and version. You will end up in all locks closed which can't be opened.
Use Dejan's Flasher, it unlocks by partial flashing or downgrade-unlock-upgrade. You can have it at
http://www.net.yu/~dejan/download/flasher.zip
Regards,
neb