iPhone from Optus Australia instructions:
- Send the IMEI to our server
- Wait 1 or 2 days we return the answer "activated"
- Then, install last version of iTunes
- Make sure phone is last version updated by official itunes sw
- Connect phone to iTunes with not accepted (not valid) simcard
- Wait until itunes detect phone
- Now diconnect phone and reconnect after 10 seconds.
- Phone Unlocked.