Articles on: Troubleshooting

Unsupported file: the printer's firmware can't run this file

A free printer won't pick up your queue item, and the queue inspector shows the reason - its firmware can't run this file. It's usually a quick fix.

What this means

SimplyPrint uses tags to route the right files to the right printers - so a job only runs on a printer that can actually print it correctly, and you don't waste time and filament printing something on the wrong setup. A file or queue item can be tagged with details like its material, color, nozzle size and bed type, and SimplyPrint also checks things like whether the model fits and whether the printer can run the file. When a printer doesn't meet one of the item's requirements, the two won't match, and the item won't start on that printer.

Here, the printer's firmware can't run this file type at all. For example, a Bambu Lab printer in cloud mode can't print a raw .gcode file, and some formats need a minimum firmware version. Sending it anyway would just fail at the machine, so the printer is excluded.

How to fix it

Send the item to a printer whose firmware supports the file.
Or re-slice or re-add the item in a format the target printer can run.

Learn more

For the full list of reasons a printer won't take a queue item - and how the queue inspector shows which one - see the guide below.

Why won't my printer print this queue item? Using the queue inspector

Updated on: 04/07/2026

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