How to Update Firmware on Ray5

1) Update by ESPTool Web

Enter https://espressif.github.io/esptool-js/ in the browser. This webpage can connect to the serial port to flash the firmware online. Select the baud rate 115200 and connect to the CH340 serial port, then click “Erase Flash” first, then enter the Flash address 0x0 and select the firmware, then click “Program” to start burning.