The firmware Instructions Here are the firmware installation and operation instructions.

• ESP_OLM3_V211_230223

Download and unzip this file please

Download Link: ESP_OLM3_V210_230223.zip

Extract zip file into desktop.
Inside it, you will see a ESP_OLM3_2010.bin file

Now with your machine connected via USB to your computer.
Tap the reset button once to turn off your ORTUR

Then do this sequence carefully:

PRESS and hold the reset button on the back of the motherboard. Do not release
Count 3 seconds
PRESS also and hold the power button. Do not release
Count to 3 seconds
Release Reset Button
Count 1 second
Release Power Button

Now your computer will show an ORTUR UPDATE drive – almost as if you had inserted a USB thumb drive
Copy the bin file we extracted earlier into the drive and allow the machine to do its update operation
It will take 30-60 seconds and the machine will home again

Reconnect to LightBurn or LaserGRBL – in the console type where it says (Type commands here) or (Type GCode here)
$RST=*
The machine will respond with
[MSG: restoring defaults]

At this point, you should be ready to use the device.
Note: your wifi settings if you had them will need to be done again