# FIRMWARE UPDATE INSTRUCTIONS
- 20230807
- pandaplacer.com


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# How to upload MARLIN firmware:

- Install platformio;

- Import/Open the Marlin source file and select the corresponding motherboard configuration "PANDAPLACER_MC_V2_0" in PlatformIO.

- Power up PPMC board and connect the USB to the PC. At the end of "Marlin2.1.1>ini>stm32f1.ini", change the port to the port name of PPMC board in system.

- Quit other software that is using the port

- Click on "Upload", the firmware will start compiling, and will be uploaded automatically via bootloader after the compilation is finished.

- After the download is complete, you need to manually power off and on again to complete the update.


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# How to install Bootloader (New STM32 chip):

- Use ST-LINK (or other supported tools) to properly connect the SWD connector on the motherboard;

- Use STM32CubeProgrammer to upload the bootloader file to the chip.

- After upload the bootloader, then do the firmware upload job.It is normal to see no new ports nor USB anomalies when updating the firmware for the first time.After that Bootloader needs to rely on the correct port name.



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