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Original Prusa MK3.9S support

Original Prusa MK3.9S support

Firmware 6.2.4

April 15, 2025

PrusaSlicer 2.9.2

April 11, 2025

Handbook 1.01

October 23, 2024

Upgrade to MK3.9S from MK3/MK3S/MK3S+

1. Introduction1a. Parts check1c. Parts preparation2. Frame assembly4. Z-axis assembly5. Nextruder assembly7. Y-carriage & Heatbed assemblyManual changelog

Original Prusa i3 MK3/MK3S/MK3S+ to MK4S/MK3.9S upgrade (1.01)

12 chapters
Moderate

Upgrade to MK3.9S from MK3.9

1. Introduction2. Upgrading the Y-axis3. Upgrading the xLCD4. Upgrading the Nextruder4B. Upgrading the Nextruder (MMU3)5. Upgrading the connectivity6. Preflight checkManual changelog

Original Prusa MK4/MK3.9 to MK4S/MK3.9S upgrade (1.01)

8 chapters
Moderate

Get started with MK3.9S

How to update firmware (CORE One, MK4/S, MK3.9/S, MK3.5/S, XL)

How to update firmware (CORE One, MK4/S, MK3.9/S, MK3.5/S, XL)

On the Prusa CORE One, Original Prusa MK4/S, MK3.9/S, MK3.5/S, and XL, the firmware is flashed using a USB flash drive. This is valid for all ways of firmware updating.  Offline…

Community posts

Mk3.9S Power Issue
richnormand
  • 7 replies
6.2.4 Firmware for Original Prusa MK3.9S
Jan Kratochvíl
  • 1 reply
Printer Displayed Time is Wrong
Dan Nellessen
  • 1 reply
6.2.4-RC1 Firmware for Original Prusa MK3.9S
Jan Kratochvíl
  • 1 reply
MK3S to MK3.9S - Motors have different connectors, what's the fix?
JoanTabb
  • 2 replies

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