Ender 3 Bootloader Firmware Update Marlin

By admin · September 19, 2023

File > ExamplesExample SketchesArduino ISPManage LibrariesU8glib

the Sanguino boardArduino PreferencesAdditional Boards Manager URLs

https://raw.githubusercontent.com/Lauszus/Sanguino/master/package_lauszus_sanguino_index.json

Boards ManagerSanguino

ToolsArduino UnoArduino UnoCOMUploadArduino ISP

Arduino Ender 3 bootloader connections

Matching up the pins

RESETEnder 3 Arduino wiring diagram

SanguinoToolsProgrammerAVRISP mkIIArduino as ISPBurn bootloader“Output bootloader burned successfully”

Troubleshooting

Double-check your settings and connections
Swap out your jumper wires in case yours are defective
Make sure you downloaded the Arduino IDE directly from the Arduino website (not the Windows store)
If you see an error such as the one below (especially if you’re running macOS), try installing the TH3D United Firmware Package and running the included preconfigured Arduino IDE instead of the normal Arduino IDE. Then, select Sanguino (1284P Boards) as the board. If you’re using a Mac, don’t forget to follow the Mac setup instructions for the TH3D Arduino IDE.

avrdude: stk500_getparm(): (a) protocol error, expect=0x14, resp=0x14

avrdude: stk500_getparm(): (a) protocol error, expect=0x14, resp=0x01
avrdude: stk500_initialize(): (a) protocol error, expect=0x14, resp=0x10
avrdude: initialization failed, rc=-1
         Double check connections and try again, or use -F to override
         this check.

avrdude: stk500_disable(): unknown response=0x12
Error while burning bootloader.