Reinstall Asterisk & FreePBX

For Asterisk:

yum reinstall asterisk* -y

For FreePBX:

yum reinstall freepbx* -y

During FeeePBX reinstall if you receive a DB error in the log:
"[FATAL] PEAR must be installed (requires DB.php). Include path: .:/usr/share/pear:/usr/share/php"

fix is simple:

pear install DB

and then

yum reinstall freepbx* -y