First I got the code, followed the instructions and… failure! Emailed SO, they sent me a second, "revised" code for unlocking – I followed the same steps and VOILA, on the screen appears the message: “ SIM / PHONE restriction OFF “;
No cables, no special software required, just the support from Askspeakout, done through Nokia Canada.
Maybe the not so great numbers(revenue) for Nokia worldwide with the fear of bankruptcy/takeover, changed their approach/mentality.

Now, the quad phone can be used to it's real value, not to mention you can change whenever you like the carrier!
Awesome job SO!

Cheers!

PS: I am unlocking the second one now, but I got the first step – the failure; I am waiting for the revised code and hopefully will work, exactly like for the other phone.