I've successfully built a working KitKat ROM for the iMito QX1 

It took some time to get WiFi and Bluetooth working. I had to make a lot of modifications in the kernel (Leolas's JellyBean kernel commits were very useful, thx) and build a complete ROM from the Rockchip SDK for the RDA587X-RTL8189 combo, but everything seems to be working fine now.

I'm still working on perfecting the ROM. Here is a little teaser:

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Click image for larger version.  Name: qx1_kk_720p_antutu4_details.png  Views: 21  Size: 67.9 KB  ID: 9933Click image for larger version.  Name: qx1_kk_720p_antutu4.png  Views: 11  Size: 121.5 KB  ID: 9932