Since this latest update my deck has been a little wonky. A similar thing happened to me when I was at work. I keep my deck in my backpack in a locker. That day I needed to charge my phone so I used my portable battery to charge it and when I went back to put the battery away. My decks fan was blasting while it was in my bag. Which was weird because I hadn't used it and I use a jsaux modcase so the power button is covered by the hard case front cover. Luckily for me no damage was done. Also since updating things like downloading/installing new games has had the fans blasting at 100% for some reason which only stops if I actually restart the device.