Where can I download Ubuntu mate for 18.04 for raspberry pi 3+? I went to ubuntu mate download page and only see 20.04 and 20.1 images for the raspberry pi. I am trying to set a raspberry pi 3+ on a turtlebot3 with ROS melodic.
You can find them in the respective arm64 or armhf directories here: https://releases.ubuntu-mate.org/archived/bionic/
Thanks for the help!