RatRig V Core 4 Updating for use with latest Prusa Slicer | Rat Rig Community [Unofficial] | Page 1

warm fulcrum Jan 22, 2026, 5:51 AM

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Recently purchased a second hand V core 4 and when i tried to print with it earlier it said it was unable to print due to incompatible slicer version that i could only use up to 2.90 version. How do i go about updating what ever i neeed to get it to be able to work.

hybrid lotusBOT Jan 22, 2026, 5:51 AM

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dapper seal Jan 22, 2026, 7:33 AM

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[RatOS]
allow_unsupported_slicer_version: true
needs to be added to printer.cfg,

warm fulcrum Jan 22, 2026, 11:54 AM

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where exactly is this "printer.cfg", im new to this ratOS thing

dapper seal Jan 23, 2026, 3:32 AM

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Click on Configuration, it is one of the files there.

warm fulcrum Feb 4, 2026, 8:17 PM

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Ok, under what line do I add the allow_unsupported_slicer_version: true to the printer.cfg,

#RatRig V Core 4 Updating for use with latest Prusa Slicer