Image file name: hd18q-ota-20150117.zip
Firmware: Android KitKat 4.4.2 stock firmware
Image file size: 409 MB
Platform: Amlogic S805
Build number: hd18q-user 4.4.2 KOT49H 20150117 test-keys
Please do not update firmware unless you know what you are doing, you really want it or it is absolutely necessary. Firmware updates may occasionally have bad results, like bricking your device, temporarily or permanently. The firmware update process is done entirely at your own risk. Before attempting to update the firmware, back up your data.