.
1.insert only a half of the sim card.
2.put battery on the phone just to touch contacts and do not close battery.
3.power the phone.
4.when you see insert sim on display,push sim card full inside with some plastic.
5.now you can close battery.
6.full reset with *2767*3855#
7.insert code *7465625*638*00000000*00000000# (when you insert zeros you will have this-------on display but it is ok).You will see the message network locked on display.
8.insert this code #7465625*638*00000000#and you should see this-
NETWORK UNLOCKED.
You can unlock e390,d900,d900i etc.with this codes
All tested by me