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Original Prusa MK3.5S support

Original Prusa MK3.5S support

Firmware 6.5.3

March 24, 2026

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Changelog

Handbook 1.01

October 23, 2024

Upgrade to MK3.5S from MK3S/MK3S+

Get started with MK3.5S

Fix common issues

Community posts

Print quality issue between MK3S and MK3.5S - Overhang on model
Cheb
  • 3 replies
Where Are the Upgrade Instructions for the Extruder?
Tango
  • 1 reply
6.5.3 Firmware for Prusa MK3.5S
Bazzalight
  • 2 replies
Clogging in heat sink after a few seconds - new HotEnd
barnmich
  • 3 replies
Any plans or solution to simplify E3d revo nozzle change?
Robin_13
  • 2 replies

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