CM4Stack HA Image Flashing Guide

This guide explains how to flash a Home Assistant image to CM4Stack and set it up as a smart home control center.

1. Prepare the Hardware

• CM4Stack

2. Download the Image

3. Flash the Image

Flashing on Windows

1. Download and install Raspberry Pi Imager.

2. Download and install rpiboot.

3. Press and hold the BOOT button on the side of CM4Stack. Then connect the device to your computer with a USB cable and power it on.

4. Run the installed rpiboot.exe. After the computer detects the CM4Stack eMMC, a new disk device will appear. If the device is not detected, check the USB cable and repeat the power-on procedure in the previous step.

5. Open Raspberry Pi Imager. Select Use Custom in the operating system list and choose the downloaded image file. Select the CM4Stack eMMC as the target disk, verify the settings, and click NEXT to start flashing.

Flashing on Linux

1. On Linux, obtain the source code for Raspberry Pi usbboot and compile rpiboot:

sudo apt install git pkg-config make gcc libusb-1.0-0-dev

git clone --depth=1 https://github.com/raspberrypi/usbboot
cd usbboot
make

2. Press and hold the BOOT button on the side of CM4Stack. Then connect the device to your computer with a USB cable, power it on, and run rpiboot:

sudo ./rpiboot

3. After the eMMC is detected as a disk, use Raspberry Pi Imager to flash the image as described for Windows. Alternatively, use dd to write the extracted .img file. Confirm the target disk path before running the command. The following command is for reference only:

sudo dd if=./2024-03-06-CM4StackOS-haos_rpi4-64-12.1.img of=/dev/sda bs=1M status=progress oflag=dsync

4. Start the System

Connect CM4Stack to a power supply and Ethernet. After startup, the device screen displays its current IP address. Devices on the same local network can access Home Assistant at IP:8123. During the first startup, Home Assistant OS must download resource files over the network. This may take several tens of minutes. If initialization does not complete after an extended period, try using a network configured with a proxy.

http://xxx.xxx.xxx.xxx:8123/

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