The BYD Atto 3 is a feature-rich electric vehicle, but there might be occasions when you need to downgrade its firmware for compatibility or troubleshooting reasons. Follow this detailed guide to safely perform the downgrade.
Disclaimer
Downgrading the firmware may void your warranty or affect your vehicle’s performance. Proceed at your own risk, and consult BYD support if you are unsure.
Prerequisites
Before starting, ensure you have the following:
• A USB drive formatted to FAT32.
• Access to the appropriate firmware files.
• A computer to transfer files to the USB drive.
Steps to Downgrade Firmware on the BYD Atto 3
1. Identify Your Current Firmware Version
• Navigate to your car’s infotainment system.
• Go to Car Settings > System Settings > Software > Software Version > View System Version.
• Locate the System Version field (e.g., 13.1.32.2307211.1) to identify your car’s firmware.
• Match the system version with the compatible firmware from the table below:
System Version Compatible BYD Models
13.1.22 BYD Yuan Plus
13.1.32 BYD Atto 3, BYD Dolphin
13.1.33 BYD Seal, BYD Han
• Once confirmed, download the correct firmware downgrade file from this link.
2. Prepare the USB Drive
• Format your USB drive to FAT32.
• Create the following directory structure:
root > BYDUpdatePackage > msm8953_64 > UpdateFull.zip
• Copy the downloaded firmware file into the msm8953_64 folder.
3. Park and Power On the Car
• Park the car in a safe location and ensure it remains powered on but in park mode.
4. Insert the USB Drive
• Plug the prepared USB drive into the vehicle’s USB port.
• The infotainment system should automatically detect the firmware package.
5. Initiate the Downgrade Process
• Navigate to the System Update section in the infotainment system.
• Select the firmware file and confirm the downgrade.
• Follow the on-screen prompts to proceed.
6. Wait for the Process to Complete
• The system will reboot multiple times during the downgrade process. Do not turn off the car or remove the USB drive until the operation is complete.
Final Notes
Downgrading your firmware can resolve certain issues but might introduce others. Always back up your settings and consult an expert if needed. For further assistance, contact BYD support.
This guide ensures users identify their system version accurately before selecting the correct firmware file.
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