The Zync Cloud is one of those orphan devices you're not going to get a lot of information about. The only way to update it is to get the manufacturer to write an updated version of Android, so you'd have to contact them about that.
As far as rooting it, all you need is some exploit that gives you temporary root and a driver to allow your computer to access the Cloud. From that you can install su, busybox and SuperSU using adb. The problems here are the driver and the exploit - and you're pretty much on your own in finding them. (The manufacturer might give you a link to the driver, but I doubt they'd tell you how to obtain root.)