Phuong Error messages that appear during the firmware update process are also related to the MCU.
1: Try restoring the factory settings, or go to "Settings" > "Factory Settings" > "Password 108" > "Restore Configuration Parameters" and follow the instructions to see if the MCU can read the settings.
2: Disconnect all connected external devices, leaving only the DUDU G port connected. Also disconnect the G6 and G7 cables. Check if the MCU can read the settings.
3: If none of the above methods work, please contact DUDU sales for after-sales service.
