I have an icon and I never looked at the firmware version... All I know is that when I bought it off of ebay, it had 8.1, cortana, transparent, tiles, and live folders.  Since then, I had to ship my phone off to Nokia for a physical motor issue with the vibration function and they replaced my phone with an 8.0 Icon.  Tried to update and I got 8.1 back, but it does not have live folders anymore and the battery life seems less than prime.  Is there any explanation to this?  Are Icon's running Black supposed to be able to have live folders?

I also have problems with my pinned web links disappearing.

I reason it's because whoever sold me that phone had an awesome update up on and when Nokia saw it, they swiped it up.  IDK.  I should have taken some screen shots.