We recommend that you follow our follow the steps to update the firmware:
https://docs.sunfounder.com/projects/galaxy-rvr/en/latest/faq.html#how-to-update-firmware-for-esp32-cam
If you are unable to connect to the GalaxyRVR’s WiFi to update the firmware, you will need to prepare an ESP32 CAM burner to burn the firmware to the ESP32 CAM module.
https://github.com/sunfounder/ai-camera-firmware/releases/download/1.4.1/burn.esp32-cam.bat.zip
After downloading the zip file, unzip the file.
ESP32 CAM connect to the ESP32 CAM burner, use the data cable to connect to the USB port of the computer, open the folder and double-click the install_ESP32.bat file, then you can carry out the sample firmware.
