well to start who the hell is NATPC?
nobody has heard about them, they dont even have a website to provide any type of support to their customers (not that I could find anyway)
forget about any type of software update including jellybean, it will never happen, this is also a very unknown tablet which means most likely bearly anyone has it except people trying to save a few $ so forget about developer support, I cant find any support on XDA or a few other forums
Ive been down this road before (2x in fact) trying to save a few $ to get a tablet, first one was crap and had pretty much no support along with the crappy hardware it had, 2nd one wasnt bad, as it had company and dev support but left alot of things to be desired (like like build quality and battery life), now I have an Acer A500 though
my advice is too save up and buy a well known name brand tablet and not some cheap china branded junk tablet