I have just opened support.lenovo.com and checked for the drivers of Yoga models, randomly chosen 4 of those, and all the official WiFi drivers are worth: 64MB.

I have just opened support.lenovo.com and checked for the drivers of Yoga models, randomly chosen 4 of those, and all the official WiFi drivers are worth: 64MB. I am not sure what the author was downloading then. --- BCM WIFI driver for Windows 8.1 (32-bit) exe 64 MB Windows 8.1 (32-bit) Wifi-BCM-5.93.98.207 2/12/2015 ---