Shortly after the purchase I have the same upgrade to 8.1, and the bios update offered also installed. The Tablet Fan jump occasionally, in the docked state the fans run, and can be heard, but not so annoying and loud as partially described here. Now, after just one week, I would buy the device at this price at any time. The tablet is considered alone, of course, not so small and narrow like a Samsung Tab S, but just not a Android, that would already be a clear advance. Processing / Quality, the keyboard and battery life Top. By the way, the helix has a Lenovo warranty of 3 years!.