Keeping your Longer Ray5 laser engraver updated with the latest firmware is essential for maintaining stable performance, improving engraving accuracy, and unlocking new features. Regular firmware updates help fix known bugs, enhance motion control, and ensure better compatibility with LightBurn and other laser control software.
For makers, small businesses, and educators using the Ray5 as a desktop laser cutter and engraver, staying up to date ensures smoother workflows, safer operation, and more consistent engraving and cutting results across different materials.
In this guide, you will learn how to safely update the Longer Ray5 firmware using ESPTool Web, step by step.
Why Firmware Updates Matter
Firmware is the internal software that controls every aspect of your Ray5’s operation—from laser power and motion control to platform calibration and safety features. An outdated firmware version may limit performance, introduce errors, or cause unexpected behavior during engraving or cutting tasks. By keeping the Ray5 firmware current, users benefit from:
- Improved motion control for precise engraving and cutting.
- Enhanced safety features, including tilt and flame detection responsiveness.
- Optimized communication with desktop software for smoother workflow.
- Compatibility with new materials and advanced engraving techniques.
Regular updates ensure that your laser cutter and engraver remain reliable, safe, and capable of achieving professional-quality results.
Step-by-Step Guide: Updating via ESPTool Web
The ESPTool Web method allows users to update the Ray5 firmware online through a web browser and serial connection. Follow these steps carefully:
Open your browser and navigate to https://espressif.github.io/esptool-js/
This interface connects to your Ray5 via the serial port and allows online firmware flashing.

Select the baud rate 115200 and connect to the CH340 serial port, which is recognized by your computer when the Ray5 is plugged in.

Click “Erase Flash” to clear the existing firmware and prepare the device for the new version.

Enter the Flash address 0x0 and select the firmware file you want to upload. Ensure that the firmware corresponds specifically to your Ray5 model to avoid compatibility issues.

Click “Program” to begin the firmware upload. The process may take a few minutes; do not disconnect the device or turn off the power during this step.

Once the upload completes, restart your Ray5 and verify that all functions, including engraving, cutting, and safety features, operate correctly.
Tips for a Safe and Successful Firmware Update
Updating firmware is straightforward, but taking precautions ensures success and prevents device issues:
- Always use a stable USB connection and power source to avoid interruptions.
- Close other programs that might interfere with the serial connection during flashing.
- Backup any critical settings or calibration data before performing the update.
- Verify the firmware version before uploading to ensure it matches your Ray5 model.
By following these guidelines, your Longer Ray5 portable laser cutter and engraver can be safely updated, unlocking the full potential of your machine while preserving reliability and safety.
Conclusion
Keeping your Longer Ray5 laser engraver firmware up to date is essential for maintaining accuracy, stability, and safety in every engraving and cutting project. Firmware updates not only improve machine performance but also ensure compatibility with the latest software tools and help prevent unexpected errors during operation.
By following the correct update procedure, you can keep your Ray5 laser cutter and engraver running at peak performance and fully utilize its capabilities for both personal and professional projects.
For more help, tutorials, and user discussions, you can visit the official Ray5 community. Connect with other users, share experiences, and learn practical tips to get the most out of your Longer Ray5.
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