Download latest Android KitKat 4.4.2 Stock Firmware for Vido M80 / YuanDao M80 tablet CZ model from here or here. Download previous firmware from here. Download the firmware for ZB model from here.
Update file name: M80-4.4-20141229-CZ
Archive size: 563 MB
Model: Vido M80 / YuanDao M80 tablet CZ model
Model: Vido M80 / YuanDao M80 tablet CZ model
Config_version: V1.1.1
Platform: Mediatek MT8127
Project: esky27_tb_ccn_mlc_kk
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