It definitely is not the USB itself, since we have several USB's and none of them are readable on this 3 Ext, I don't know if it could be the port though? The thing is, it "sees" the files on the USB, just can't load them onto the printer
And I sadly don't know much about Linux
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gr5 2,224
Have you tried using a different USB flash drive? Just because it works fine with your PC doesn't mean it's not a faulty USB flash drive.
The UM3 has a linux computer in it. If you are good with linux you can ssh into the computer and look at log files. I could help you with that but only if you are good with linux. However I suspect it is going to just report errors with the USB flash drive. I'd check the contacts (blow on them? Check cabling maybe? I don't remember if the usb connector is part of the PCB (soldered right on the PCB) or if there is a cable to the USB jack).
Two possible paths to go down (of many):
1) Get a new linux board for your UM3. They aren't cheap - contact your reseller for a price.
2) Put the printer on the network and going forward always use digital factory to print.
There are more involved debugging paths that aren't worth it if this is a business.
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