How to flash firmware-LE400PLUS?
1. Download the firmware through this following link
https://drive.google.com/file/d/1M6-SWAjIGMMUrG2CTiNjvohCy5pd7AMp/view?usp=sharing
Then Install the correct flashing tool for your system.
Note:
- If the files are deleted by the computer, please turn off the computer anti-virus software.
- Please exit all laser software like lasergrbl and lightburn before you start flash firmware.
2.1 For Windows systems computer, please open “Flashing tool for Windows ” to install the flashing tool. For macOS systems computer, please open “Flashing tool for macOS”.
Note: Don’t install the program on the system disk (disk C), as this may cause the program to fail to start.
2.2 Open the software. 
2.3 Click the “ Download Tool”.
2.4 Import the .bin format file and select the correct parameter as the following screenshot, then click “start”.
Please wait for the flashing to succeed. After successfully flashed, unplug/replug or reset device to switch back to normal boot mode.
Note:
- If there is a reminder: the port cannot be found, please uninstall the port COM in the device manager, and then reinstall the software CH340 driver in laserGRBL.
- Please exit all laser software like lasergrbl and lightburn before you start flash firmware. Otherwise, it will cause the flashing to fail.
