Upgrading Incredible PBX 2020 to Incredible PBX 2021 (Raspbian)
With special thanks to Josh Culp, we are pleased to provide an upgrade script for Incredible PBX 2020 that upgrades Asterisk 16 on Raspbian platforms to Asterisk 18. Any Asterisk 18 bugs should be reported to issues.asterisk.org.
rm -f upgrade-to-incrediblepbx2021
chmod +x upgrade-to-incrediblepbx2021