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  1. write this image to your emmc: https://drive.google.com/file/d/169c8aaMe8YdqOP-cswjxlOCQqbp_6HrL/view?usp=drivesdk

  2. to flash the mcu firmware, download this file, rename it to 'X_4.bin', copy it to a micro sd card, plug it into the printer, and restart your printer: https://raw.githubusercontent.com/billkenney/update_max3_plus3/main/old_X_4.bin

325057677-0d15df45-8cd8-4e4c-88ec-a71b152b8cbb

  1. to flash the extruder mcu, you need to unplug all usb devices except for the extruder, then hold the bottom left button on the back of your extruder board (see the image) for like 2 minutes or until the screen loads up fully

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ssh into your printer. run lsblk and if it shows the below output, run wget https://raw.githubusercontent.com/billkenney/update_max3_plus3/main/old_klipper.uf2 ; mv old_klipper.uf2 ~/gcode_files/sda1/klipper.uf2, then restart your printer

sda 8:0 1 128M 0 disk

└─sda1 8:1 1 128M 0 part /home/mks/gcode_files/sda1

  1. to flash the rpi mcu, ssh into your printer and run cd ~/klipper ; make clean ; make menuconfig and configure as shown in the below image. Then press 'q' and select the option to save, then sudo service klipper stop ; make flash ; sudo service klipper start

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  1. to install the latest firmware and printer.cfg file, if you have the max3 with the bltouch, run wget https://raw.githubusercontent.com/billkenney/qidi_3series_recovery/main/mksclient-max3.deb ; sudo dpkg -i mksclient-max3.deb ; rm mksclient-max3.deb ; wget https://raw.githubusercontent.com/billkenney/qidi_3series_recovery/main/printer-max3_bltouch.cfg ; mv printer-max3_bltouch.cfg /home/mks/klipper_config/printer.cfg

if you have the max3 with the inductive probe, run wget https://raw.githubusercontent.com/billkenney/qidi_3series_recovery/main/mksclient-max3.deb ; sudo dpkg -i mksclient-max3.deb ; rm mksclient-max3.deb ; wget https://raw.githubusercontent.com/billkenney/qidi_3series_recovery/main/printer-max3_probe.cfg ; mv printer-max3_probe.cfg /home/mks/klipper_config/printer.cfg

if you have the plus3, run wget https://raw.githubusercontent.com/billkenney/qidi_3series_recovery/main/mksclient-plus3.deb ; sudo dpkg -i mksclient-plus3.deb ; rm mksclient-plus3.deb ; wget https://raw.githubusercontent.com/billkenney/qidi_3series_recovery/main/printer-plus3.cfg ; mv printer-plus3.cfg /home/mks/klipper_config/printer.cfg

restart your printer and you should be good to go