HI guys:
Here is the newest stock firmware for the Q7 quad core tv box. if you don’t know if your device is Q7, read this post
https://blog.geekbuying.com/index.php/2014/01/25/whats-the-difference-between-t-r42-mk918-cs918-q7-quad-core-tv-box/
you can download the stock firmware here:
http://www.mediafire.com/download/q1k42qawb0cvtzq/rk3188_4.2.2_box_q7_v001_20140227.zip
the new stock firmware remove some built-in chinese app, and add the support for RMVB videos. also it built in a XBMC version, however, i have tested the XBMC version and compare with the beyond xbmc version, i find the beyond xbmc is way better. you can read the information for beyond xbmc here
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