Download 111k4 firmware for Beelink MXIII / M82 TV Boxes from here or from here. To flash firmware on this box from PC via AMLogic USB Burning Tool read this article.
Update file name: MXIII 111k4 Amlogic S802 174226 20150112
Archive size: 383 MB
Firmware: MXIII_111k4 1+8&2+8通刷.img
Model: MXIII / M82 TV Boxes
Firmware: MXIII_111k4 1+8&2+8通刷.img
Model: MXIII / M82 TV Boxes
Platform: AMLogic S802