If Lightburn cannot talk to the machine, it can’t really tell you anything other than it can’t find it…
If the last update was lightburn, it doesn’t deal with drivers, in the light it is an application and a driver is part of how the os interfaces.
How can/did you do this?
You have cleverly left out what kind of computer you own, which is usually in your profile… I can’t suggest anything without know what os you are running. I work with Ubuntu Linux.
Try this thread and if it doesn’t pan out search for ch340 on the site…
Good luck
