Download latest Android Jelly Bean 4.2.2 stock firmware for Vido M11 / YuanDao M11 tablet from here or from here. Download KitKat firmware for Pro version from here. Download another Yuandao firmware from here.
Archive: M11-A4.2-20140514-ZZ
Firmware image file: M11-A4.2-20140514-ZZ.img
Model: Vido M11 / YuanDao M11 tablet ZZ model
Image file size: 275 MB
Platform: Rockchip RK3188
Boot version: 2.09
FW version: 4.2.02