I have just got a copy of the Unlock Midlet from Nokia. There appear to be a few points to note with it (based on my personal observation, so could be wrong!):
1) The midlet is only intended for 'official' R&D departments within a company, not someone who just wants to have a play.
2) The midlet is a pre-release
3) I have been told I must not distribute the midlet, infact I must delete it as soon as I have unlocked my phones.
**DO NOT ASK ME FOR A COPY OF THE MIDLET**
It would apper if anyone wants a copy then must make a specific request to Nokia and not just ask on the Forums "When will it be released".