There is actually the 4.3.9 that is posted as released by Kinzone on Needrom.comHi
I guess this is not the right place, should be moved to Android General or somewhere
You are asking for a custom rom, right?
For the kingzone k1 there are a few custom roms on needrom.com, I have not tested those so be careful.
Android 4.3.9 is not a real Android Version. 4.2.2 is the latest Android for this phone.
Good Luck!