Updating Klipper Firmware on a Fly-407ZG in USB mode

How to update the klipper firmware running on a Fly-407ZG in USB mode

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Configuring and installing Klipper for USB

Tip: To read more about the KCONFIG_CONFIG option, see here

Compile Klipper Firmware for the usb

Note: Repeat these steps if a klipper update requires flashing new firmware to the MCU.

ssh into your klipper host console
cd to the klipper directory
```
cd ~/klipper
```
Run make clean
```
make clean KCONFIG_CONFIG=config.407zg
```

Important: If when running the above command you get this output

Using default symbol values (no 'config.407zg')

Configuration saved to 'config.407zg'

Then you need to set all the correct settings when running make menuconfig below.

Open menuconfig

make menuconfig KCONFIG_CONFIG=config.407zg

Check to make sure the following settings are set
- Enable extra low-level configuration options : Checked
- Micro-controller Architecture : STMicroelectronics STM32
- Processor model: STM32F407
- Bootloader offset: 32 KiB bootloader
- Clock Reference: 8 MHz crystal
- Communication interface - USB (on PA11/PA12)
  Klipper Menu Config USB
Quit (and save if changes were made) the configuration
Run Make to compile the firmware

make KCONFIG_CONFIG=config.407zg -j4

Updating Klipper USB firmware with Katapult over USB

Look in your printer.cfg file and make note of the serial ID for your board.

Run the make flash command to flash the firmware

make KCONFIG_CONFIG=config.407zg flash FLASH_DEVICE= {Your serial ID here }

Example

make KCONFIG_CONFIG=config.407zg flash FLASH_DEVICE=/dev/serial/by-id/usb-Klipper_stm32f407xb_170038000650314D35323820-if00 

Your Fly-407ZG should now have the Klipper firmware running on the board updated to the latest version.

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