I currently have FreePBX 17 running with Asterisk 20 on Debian 12 ARM. I am working on the install script and will make it available for those who are interested in testing. So far I have only had one issue and that is the backup/restore module is throwing an error.
“file_get_contents(/var/lib/asterisk/.ssh/id_ecdsa.pub): Failed to open stream: No such file or directory”