How is what I said disregarding what you consider valid? I mean... let's be frank here. I did what I said I did, and it worked. Didn't brick the phone. Didn't cause any issues. So what's your point there?

And pertaining your point, let's answer the question you're not willing to answer aloud. Can you upgrade to WP8?

You cannot. So flashing the Lumia 800/900 in a "meaningful manner" means what exactly?

You can flash a vanilla PR1.3 onto a N9. I have no branding whatsoever on my phone. Zero. So your point isn't quite holding up. And I've taken Mexican Telcel N9's when I was helping source them for members and went from PR1.2 to PR1.3 unbranded without incident.

Look at this forum, other folks have done the exact same thing.