Download latest KitKat 4.4.2 stock firmware for Eny M8 TV Box from here or here. Download from here previous version of firmware for M8 TV Box. To flash firmware on this box from SD card read this article.
Archive: ENY_Old-m8_ap6330_8g2g_141208_sd-XBMC 13.2
Model: Eny M8 TV Box
Image file size: 349 MB
Platform: Amlogic S802 quad core
Update file name: k200-ota-20141208.zip
Build number: k200-user 4.4.2 KOT49H 20141208 test-keys
Update file name: k200-ota-20141208.zip
Build number: k200-user 4.4.2 KOT49H 20141208 test-keys