Original Prusa MK3.9S

Original Prusa MK4/MK3.9 to MK4S/MK3.9S upgrade

1. Introduction

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2. Upgrading the Y-axis

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3. Upgrading the xLCD

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4. Upgrading the Nextruder

5. Upgrading the connectivity

6. Preflight check

Manual changelog

4B. Upgrading the Nextruder (MMU3)