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Amazon.com: Creality Ender 3 / Pro Color Display Screen and 4.2.7 32 Bit Silent Control Board with 2021 Marlin Firmware and Easy Installation Complete Plug and Play Upgrade Kit, Guide and Mounting
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Bootloader Flashing Guide - CR-10/Ender 2/Ender 3/Ender 5/X3S/X5S/Wanhao i3 - 1284p Boards - YouTube
Melzi-Board-3D-Printer-Firmware/Repetier/pins.h at master · teklab-de/Melzi-Board-3D-Printer-Firmware · GitHub
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Using an Arduino to Flash the Melzi Board (Wanhao I3) and Upgrade Firmware : 3 Steps - Instructables
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