Tronsmart NX is the newest product from Tronsmart, built in webcamera, and have cool design. It use the real rk3188 chip, not the rk3188-t.also support dual-band wifi.
Here is the stock firmware for the Tronsmart NX
http://www.mediafire.com/download/q5cm8gyg1sxxzq9/Tronsmart_NX__RK3188_AP6330_Firmware.rar
this rom is coming with Rooted, so you don’t need to worry how to root.
How to update the firmware?
you may need the flash tool here
http://www.mediafire.com/download/cmj5b4222p7cbm7/RKBatchTool_v1.7.rar
if you have problem to install the drivers on your pc, you can try this instruction
and the detail instructions, please just follow this one:
https://blog.geekbuying.com/index.php/2013/07/03/how-to-update-firmware-on-k-r42-quad-core-tv-box/#.UxpzN_nu-hU
it should be the same.
Eric
Geekbuying