I purchased the 50" model of the M3300 on the 18th of December and have had no issues until yesterday. I attempted to do a firmware update using a USB stick and an update loader from Hisense's Italian site. The update is meant to take anywhere from 5-10 minutes but mine had been going on for nearly 2 hours so; assuming the TV had crashed, rebooted and tried again. Now the buttons on the remote and the side of the TV are completely unresponsive, when I switch my TV on, it boots up as normal and goes straight to BBC 1 HD so I'm pretty sure its only a software issue. Any help would be greatly appreciated, I've contacted Hisense myself about the issue but I doubt I'll get a response until Monday at the earliest.