Info 2 NIKAI NMID7007 update to kitkat or 4.2

Hi All
I am using nikai tab NMID7007, with A13 cortex A8 1.0GHz processor. Can some one help me how to upgrade os on it? It dosnt have system update option in the settings, and I couldn't find any topic on xda for this

The built in os is 4.0.4
Samsung Galaxy Nexus
Jelly Bean 4.1