How to update the firmware

Updating your Ray5 mini firmware can improve machine stability, fix software-related problems, and ensure compatibility with the latest features. This guide explains the official firmware update methods step by step using MKSLaserTool, ESPTool Web, and the LaserBurn App.

All procedures, settings, menu names, and operational sequences in this guide follow the original official instructions exactly.

What This Guide Covers

This tutorial explains:

• How to locate the correct CH340 serial port
• How to update firmware using MKSLaserTool
• How to flash firmware using ESPTool Web
• How to upgrade firmware using the LaserBurn App
• Correct baud rate and Flash size settings
• Common firmware update troubleshooting steps

This guide is beginner-friendly while preserving the original official firmware update process exactly.

Why Firmware Updates Matter

Firmware controls the communication between the laser engraver hardware and software. Updating the firmware can help:

• Improve machine performance
• Fix firmware-related bugs
• Improve communication stability
• Enhance compatibility
• Support newer software functions
• Resolve connection issues

Using the latest official firmware helps maintain reliable engraving performance.

Before You Start

Before updating the firmware, carefully prepare your machine and software environment.

Firmware flashing requires:

• Stable USB connection
• Correct serial port selection
• Correct firmware file
• Stable power during installation

Interrupting the flashing process may cause firmware installation failure.

Locate CH340 Serial Port (Windows)

For Windows, right-click the computer and select Manage, click Device Manager, click to expand Ports, find the port corresponding to the CH340 driver.

Important Notes:

• The CH340 driver must be installed correctly.
• The port name may change depending on the USB connection.
• Keep the engraver powered on while checking Device Manager.

Method 1: Update by MKSLaserTool Software

1.Download and Install MKSLaserTool

• Please download LaserTool from LONGER3D GitHub Repository and install it.
• Connect the laser engraver to computer with Type C cable, turn on the engraver.

Important Notes:

• Use a stable Type C cable.
• Ensure the engraver remains powered on during flashing.
• Some computers may require driver installation before detection.

2.Open the Firmware Flashing Tool

• Run the MKSLaserTool and click MKS ESP32 Download Tool.

3.Select the Correct Port and Firmware

• Select the right port which is corresponding to CH340 driver and the update firmware.

Important Notes:

• Double-check the COM port before proceeding.
• Verify the firmware file matches your machine model.

4.Configure Flashing Settings

• Set baud to 25000, Flash size to 8MB, and select ESP32 S3.

Important Notes:

• Do not modify these values unless official instructions specifically require different settings.

5.Start Firmware Flashing

• Click Start.

Important Notes:

• Do not disconnect the machine during flashing.
• The flashing process may take several minutes.
• Wait for the completion message before closing the software.

Method 2: Update by ESPTool Web

1.Open ESPTool Web

• Enter ESPTool Web in the browser.
• This webpage can connect to the serial port to flash the firmware online.

Important Notes:

• Use a compatible browser.
• Keep the engraver connected through the Type C cable.

2.Connect to the CH340 Serial Port

• Select the baud rate 115200 and connect to the CH340 serial port.

Important Notes:

• If the serial port does not appear, reconnect the USB cable and verify the CH340 driver installation.

3.Erase Existing Flash

• Click “Erase Flash” first.

Important Notes:

• Do not disconnect the engraver during this process.

4.Select Firmware and Flash Address

• Enter the Flash address 0x0 and select the firmware.

Important Notes:

• Ensure the Flash address remains set to 0x0 exactly as instructed.

5.Program the Firmware

• Click Program to start burning.

Important Notes:

• Wait until the process fully completes.
• Avoid closing the browser during flashing.

Method 3: Update by LaserBurn APP

1.Connect the Engraving Machine

• After the engraving machine is connected to the LaserBurn App, click Me→About→Firmware Update→RAY5 mini to upgrade the firmware.

Important Notes:

• Keep the app connected during the update.
• Ensure stable network and power conditions.
• Do not close the app during installation.

Common Problems and Solutions

Tips for Stable Update

• Use a high-quality USB cable
• Close other serial port software
• Prevent computer sleep mode
• Always verify firmware compatibility

FAQ

1.What is CH340 driver?

It enables USB communication between computer and Ray5 mini.

2.Why no COM port?

Driver or cable issue.

3.Can I disconnect during flashing?

No, it may cause failure.

4.Why set baud to 25000?

Required by official MKSLaserTool configuration.

5.Which ESP32 chip should I select?

A: ESP32 S3.

Final Thoughts

Updating firmware on the Ray5 mini ensures better stability and compatibility. Always use official firmware and follow the correct procedure for your selected tool.

If any issue occurs, retry steps carefully or check hardware connections before flashing again.