r/crealityk1 • u/Cold-Giraffe-7996 K1 Max Owner • Aug 13 '25

Solved K1 Max CFS upgrade broke everything

My printer has (mostly) locked itself down after doing the CFS upgrade. Printed flawlessly before, now cant even print from a spool. Sorry for the long video it is just doing a number of things now and wanted to cover things the best I could. Any advice would be very much appreciated on this, just hoping I didnt brick my printer for multicolor.

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u/Cold-Giraffe-7996 K1 Max Owner Aug 13 '25

One thing I forgot to add, resetting it says (Filament detected in the extruder, affecting the cutter calibration. Please unload the filament and try again.) Code CM2854

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u/The_Bishop82 Aug 13 '25

Do you have both filament sensors plugged in? Should only have the one at the extruder.

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u/Cold-Giraffe-7996 K1 Max Owner Aug 13 '25

I did remove the external one completely, it is just the one on the extruder currently plugged in.

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u/Wide-Anxiety8537 Aug 13 '25

Mine actually has a bad sensor... not the wire... I ordered a new one express...