Download latest KitKat stock firmware for Rikomagic MK802IV first generation (RTL8188 version) from here or from here. (S/N from 201305****to 201306****). Download previous firmware image from here.
Archive: IV_8188_4.4_141127.rar
Firmware image file name: IV_8188_141127_V4.4.img
Platform: Rockchip RK3188
Archive size: 301 MB
Archive: IV_8188_4.4_141127.rar
Firmware image file name: IV_8188_141127_V4.4.img
Platform: Rockchip RK3188
Archive size: 301 MB
Boot version: 2.19
Firmware version: 4.4.02
Firmware version: 4.4.02
Notice
Pay attention, this firmware is only for RKM MK802IV with RTL8188 Wireless/BT chip (first generation), it is not intented for RKM MK802IV with Broadcom AP6210 Wireless/BT chip (second generation). You can install it on this if you really want, it will work just fine, except WiFi and Bluetooth connections.
A list with 16 firmwares for Rikomagic RKM MK802IV with RTL8188 Wireless/BT chip you'll find here.