Download latest KitKat 4.4.2 Stock Firmware for Cloudnetgo CR12 / CR13 / CR16 TV Box from here, here or here. Download previous stock firmware from here.
Archive name: CR12_cloudnetgo_AP6330_20140926
Archive file size: 309 MB
Image file name: CR12_cloudnetgo_AP6330_20140926.img
Support: Rockchip RK3288
Boot version: 2.15
FW Version: 4.4.02