Help to unlock my Nokia 6230i

Could someone please help to unlock my Nokia 6230i?

The IMEI is 357065008019038
And its on T mobile in the UK

Thanks

 

Insert a NON accepted sim card.When it says phone restricted, press "undo."
It will ask for a restriction code,and enter the code in to the box on screen,and then input this code #pw+385 566 304 357 174+7#

 

Thanks for the code. It worked and i can now finally use my O2 sim

 

thanks for the reply