Model: RKM MK802IIIS BT TV Stick
Image file size: 296 MB
Platform: Rockchip RK3066
Boot version: 2.19
FW version: 4.4.02
Pay attention, this firmware is only for RKM MK802IIIS BT with Broadcom AP6210 Wireless/BT chip (see picture above), is not intented for Rikomagic MK802IIIS BT with MTK chip, MT5931 Wifi & MT6622 Bluetooth (first generation). You can install it on this if you really want, it will work just fine, except WiFi and Bluetooth connections.
A list with 25 firmwares for Rikomagic MK802IIIS BT first generation you’ll find here.
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.