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Xiaomi Air Conditioning Restores Factory Firmware

1. First, turn off the air-conditioning power supply, press and hold the temperature adjustment key and fan adjustment key of the remote control, and turn on the air-conditioning power supply. At this time, "Err" will be displayed on the screen, so as to enter the upgrade mode and upgrade the firmware again.

2. Secondly, while pressing the "On/Off" key on the air conditioner remote control, press and hold the "Mode" and "Wind Speed" keys until the surrounding screen starts flashing, then the equipment will be restored to the factory settings.

3. Finally, if the firmware upgrade still cannot be carried out normally, it is recommended to contact Xiaomi customer service to solve it.