I built a system using Ubuntu and manually installed Asterisk/FreePBX, so I’m not using the official distro. I’m curious to know if it’s possible to upgrade to Asterisk 13 without having to rebuilt the entire call flow, if so, how would I go about doing that?
You need to recompile asterisk 13 from source. Freepbx will automatically detect the asterisk version.
Guessing I’ll need to run these commands, with Asterisk service stopped.
cd /usr/src
wget http://downloads.asterisk.org/pub/telephony/asterisk/asterisk-13-current.tar.gz
tar xvfz asterisk-13-current.tar.gz
cd asterisk-*
./configure
make menuselect