Please note, both procedures require PBXware service to be stopped or restarted for changes to apply so make sure to perform update in off hours.
Login to the system shell as a root user
Navigate to /opt folder
Stop httpd/pbxware applications
Update httpd/pbxware applications (Password: update)
./httpd/sh/update -v ./pbxware/sh/update -v
Start updated applications:
Login to the system administration
Navigate to 'Site Settings->Updates'
Provide root and root password for Setup Wizard logins
Select all available checkboxes next to 'Setup Wizard' and 'PBXware' ( 'U' - Update, 'R' - Restart)