Request for Unlocking code for Samsung E1170

Would someone be able to give me an unlock code for the mentioned mobile with IMEI: 359762 03 014440/8 - it's locked to Optus network, australia

I had another mobile of the same provider and same mobel and i unlocked by as below

1. Insert other providers sim
2. *2767*3855# let it reboot(restart)
3. *7465625*638*00000000*00000000# (this changes network lock
w/password 00000000)
4. #7465625*638*00000000# (this deactivates network lock w/00000000)
5. *#7465625# to check all locks
If all are inactive, then you are good to go

but when i try this phone with the same details at step 3 it says already personalised.
so i couldn't unlock it. Any help to unlock is appreciated.

Thanks a lot

its not morking for 1160 or 1170
i chk but not work

its fake bro...its new samsung security...how can u unlock this model..? nobody can unlock samsung phone via this procedure...
thankz