Hi, here glad to share this 111K4 Lastest Firmware For MK808B Plus. This version is based on MK808B Plus 110K4 20150330.
Firmware download here: MK808B Plus_112k4_20150807
SD card upgrade: MK808B Plus_112k4_20150807-sdcard
Flash guide: How to flash stock firmware on MK808B PLUS quad core tv stick
Have a nice day!