No, it has nothing to do to unblock the network to use another operator (it is the service that we offer) to erase the iCloud block, this block associates each team with an email, that is, it is like a password that establishes the owner to the iPhone. If it is an iPhone with found, with report or illegal origin it is also very likely that it is also on a blacklist, with which resetting the iCloud would not be worth anything either.