How to use a CM4 without eMMC on the Dual Gigabit Ethernet Carrier Board

If you want to use a Compute Module 4 without eMMC on the Dual Gigabit Ethernet Carrier Board, then you need to flash OpenWrt on to a micro-SD card and insert it into the board. Follow the steps below according to your operating system.

Step 1. Insert a micro-SD card to the computer using a micro-SD card reader connected to the computer, or by using a built-in card reader on a laptop
Step 2. Download balenaEtcher software by visiting this link according to your operating system
Step 3. Run balenaEtcher as administrator

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Step 4. Click Flash from file and point to the OpenWrt image file that you downloaded before
Step 5. Click Select target and select the connected micro-SD card
Step 6. Finally, click Flash!

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Please wait a few minutes until the flashing process is complete.

Step 7. Eject the micro-SD card from computer and insert it into the Dual Gigabit Ethernet Carrier Board

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