Towards the beginning of 2016 I installed the developer preview and now my 1st gen firetv is stuck at version 5.0.5. I tried resetting to factory defaults, dereg/reregistering the device etc, but it just won't update. I contacted support and they could see I wasn't set to receive any updates but had no idea why and after shuffling my call around I was told there was no information on developer previews and that they would let me know their findings at some point by phone or email. After some research I found several sites/posts that referred to an issue with developer preview users being stuck on that version and needing to be moved to a different upgrade pool to begin to receive updates again. I would very much appreciate being able to update this device again. It is the only firetv device attached to the login I used to post this message. I can provide any details about the device necessary.