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Raspberry Pi CM4 System Burn-in

Open the DIP Switch​

  • After opening the DIP switch, connect the Type-C port to the computer to enter burn-in mode.

Precautions​

  1. Do not plug in any device except USB when powered on.
  2. The Type C interface can be used for power supply or as a USB SLAVE interface to burn images.
  3. To ensure normal CM4 power supply, please do not connect other devices when burning images using the Type C interface.
  4. The module has no protection, do not short circuit the power.
  5. The FLY motherboard does not support POE function! Do not use POE for power supply.
Notice
  • Note: The EMMC version cannot use the SD card.
  • Note: For the non-EMMC version, use a MICRO SD card to boot, you need to use a card reader to burn the image.
  • It is recommended that the transmission speed of the memory card (TF card) must be class10 or above, it is recommended to use TF cards from brands like SanDisk.
  • System image suitable for Raspberry Pi 3B/3B+/4B/CM4/5B.
  • This image pre-installs klipper, moonraker, mainsail, fulidd, klipper-screen, etc.
https://cdn.mellow.klipper.cn/IMG/Beta/RPI-TFT-IMG-new.img.xz

Image Download​

  • Download the system by clicking here to download the latest released system (or as shown in the figure).
  • If the downloaded file is a torrent file, use software like Xunlei or Comet to download again.
  • The image with desktop and recommended software (Raspberry Pi OS with desktop and recommended software), it is recommended to use storage space of 16G or above for EMMC or CM4 lite 16G memory card.
Notice

The EMMC version needs to switch the DIP switch into CM4 burn mode when powered off. The Lite version can directly burn the image to the system card.

Notice
  • The EMMC version needs to enter burn mode to access, below are the methods to enter burn mode.
  • The Lite version does not need to enter burn mode, just format and burn after formatting.

rpiboot (Bootloader) Download​

  • Download and open the rpiboot software with administrator privileges by clicking here
  • Install drivers and startup tools. After successful installation, there will be an rpiboot.exe application in the installation directory.

Enter Burn Mode​

  • At this time, connect the computer and power the motherboard, the computer device manager will recognize a BCMxxx device.

  • Then run rpiboot.

  • Wait until the operation ends, a U disk drive letter will appear on your computer.

Notice

Note: If the computer does not recognize the BCMxxx device, there may be a problem with one of the steps above. It is necessary to recognize the BCMxxx device before running rpiboot, otherwise it will be ineffective.

Format EMMC or SD Card​

  • Use the SDFormatter.exe software click here to download to format the SD card.

  • Or delete partitions using the built-in Windows Disk Management and then re-create partitions.

  • Right-click This PC -> Manage -> Disk Management -> Find the newly added drive letter (choosing wrong one will lead to problems) -> Delete all partitions -> Create a partition (any file system). If the system has been burned before, there will be two drive letters, ignore them and just format or delete partitions.

Write Image​

  1. Use Raspberry Pi Imager click here to download to write the image.

  2. Before burning, configure account password and enable SSH.

  3. After burning, a U disk drive letter will appear on your computer.

Finish Burning and Restart​

  • After burning, disconnect the power, disconnect the connection with the computer, and put the BOOT dip switch back. Power on again to start.

Precautions for Raspberry Pi Zero2 and Zero2W​

  • These precautions are for the explanation of using FLY-TFT screen with G2T.
  • For Raspberry Pi Zero2 and Zero2W, the default display device needs to be modified, execute the following code directly to modify.
  • Please note that a restart is required after execution to use it.
sudo sed -i 's/\/dev\/fb0/\/dev\/fb1/g' /etc/X11/xorg.conf.d/99-fbdev.conf