Question How do I root 4.4.2 Kitkat on Rockchip 3188?

Can someone guide or tell me how to root 4.4.2 Kitkat (official firmware) on a tablet with Rockchip 3188?

The tablet is named Vido M10, running Rockchip 3188, 2GB RAM and 16 GB storage.

Before I updated I had 4.2 JB (stock). On that firmware I was able to root and install CWM recovery (via some guides I found on the net).
But after I upgraded to 4.4.2 CWM recovery seems to be gone. And the root is also gone.

The guides for rooting don't seem to work anymore on 4.4.2 and arctools failed to install CWM recovery, when I try.

UPDATE 11/02: I now found a pre-rooted custom Kitkat firmware for my Vido M10 here so I just flashed this and now my tablet is rooted. After that I was able to install CWM recovery again with arctools 0.80