Here is the newest stock firmware for the CS918s tv boxes, it is just for the 5.0MP version , not for the 2.0mp. please note.
It comes with a lot of new featuers, remove the built-in chinese app, add TV launcher, and built in XBMC , Netflix. also it come with rooted.
Still, it also come with 720p, and need developer to work on the 1080p firmware.
Here we go:
Here is the instruction for how to install the stock firmware on cs918s:
Shopping link for the original cs918s is here: