I just bought an ortur laser and everything seemed fine until I tried to update the firmware. When I did this the laser disappeared from my desktop and gave me an error message saying it could not find the specified device. Since then when the machine is plugged in only the blue light shows and it does not power on or home when I hold the power button. How can I fix this
Maybe the manual for your device will help you, which you can find here:
https://ortur.tech/latest-firmware/
or maybe @OrturTech will help you