SKU: DFR0767
Compute Module 4 IoT Router Carrier Board Mini is an expansion board for Raspberry Pi CM4. It adds 2 full-speed gigabit ports via PCIe (better performance/stability than USB), has 55x62mm size, retains GPIO, and includes USB2.0. Compatible with OpenWRT (works as router), Raspberry OS, Ubuntu, etc. Ideal for gateways, smart routers, home IoT platforms, mini-NAS, etc. For routers, CM4001000 is recommended.
FAQ
Will the custom build be updated for the newest kernel?
You can build the latest kernel yourself. :)
Instructions are here:
https://gist.github.com/martin-niklasson/6912a7e5ba49b92801d54766f1d7277a
The current build is here:
https://downloads.openwrt.org/releases/21.02.0-rc3/targets/bcm27xx/bcm2711/
Just some quick things I ran into.
First, make a backup of your current config. This will make things go sooooo much faster.
You are going to be using a tool called OpenWRT Image Builder. It is in the second box under the heading Supplementary Files in the link I have provided for the current build. The file is named: openwrt-imagebuilder-21.02.0-rc3-bcm27xx-bcm2711.Linux-x86_64.tar.xz
Yes, you do need to provide the file for files/etc/config. It is a bit confusing but the contents of the file will come further down the page under the heading network. The first line is "config interface 'loopback'". Create a file called network and place the contents from the box on the page into it and save it. Then put it in the files/etc/config directory. Remember this is in the directory that you created with Image Builder.
I also ran into a problem when I tried to login in for the first time. It wouldn't accept the empty password. Here is the solution for that:
https://github.com/openwrt/luci/issues/5104#issuecomment-855692620
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