diff --git a/Devterm-CM3-ubuntu-server-image.md b/Devterm-CM3-ubuntu-server-image.md
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+ubuntu-21.04-preinstalled-server-armhf+raspi.img
+
+```
+sudo apt remove linux-image-raspi linux-image-5.11.0-1007-raspi -y
+sudo apt install net-tools network-manager -y
+
+wget -O - https://raw.githubusercontent.com/clockworkpi/apt/main/debian/KEY.gpg | sudo apt-key add 
+echo "deb https://raw.githubusercontent.com/clockworkpi/apt/main/debian/ stable main" | sudo tee -a /etc/apt/sources.list.d/clockworkpi.list
+sudo apt update && sudo apt install devterm-thermal-printer devterm-keyboard-firmware devterm-fan-temp-daemon-rpi devterm-thermal-printer-cups devterm-kernel-rpi devterm-audio-patch devterm-backlight-rpi -y
+
+```