Official firmware for the android TV boxes, M8N and M8S is available for download. Official firmware can be used for flashing in case your android television box is not behaving as it should or you want to delete all data, not wanting to leave a single trace behind.
M8N and M8S firmware can be downloaded from here. To flash the firmware, you can use the method given here.
M8N and M8S specifications include a quad core Amlogic SoC, 2 gigabytes of memory, 8GB of flash storage and dual band wireless LAN. It runs Kodi 15.2 which is basically a modified version of Android operating system. It costs 64 euro.