A friend of a friend has given me a Blackberry, which would appear to be blocked. I don't think they stole it, but likely perhaps it was found.
It's wiped, with no info on.

Is there anything I can do to unblock it? I've found something that can change the IMEI number of the Blackberry, which I guess might mean it can be used again?

Would one of these guys you find on Oxford St that do phone unlocking, be able to unblock too?