Download latest Android KitKat 4.4.2 stock firmware for Vido M11 Pro / YuanDao M11 pro tablet from here or from here. Download previous firmware version from here. Download another Yuandao firmware from here.
Archive: M11PRO-4.4-20141126-ZZ
Firmware image file: M11 Pro-A4.4.2-20141126-ZZ.img
Model: Vido M11 Pro / YuanDao M11 Pro tablet ZZ model
Image file size: 448 MB
Platform: Rockchip RK3288
Boot version: 2.15
FW version: 4.4.02