Here is the new stock firmware for Ugoos UM2 Android TV BOX:
http://www.mediafire.com/download/lphf345hbml0xse/Ugoos_UM2_2014.0213.rar
Ugoos UM2 is one of the quad core TV BOX which use rockchip rk3188T cpu, it built in internal antenna.
shopping link for Ugoos UM2 is:
Any questions, feel free to contact us.
sophie