Firmware upgrade instructions:
1. Confirm that the handheld device model is AYANEO 3
2. Extract the downloaded ZIP compressed file
3. Double click to run AYANEO3_Controller_Firmware _Tool.exe
4. Manually click on Update to upgrade firmware
5. The pop-up prompt 'upgrade success' indicates that the upgrade was successful
   Close the pop-up window and upgrade tool, firmware upgrade is complete