Added note for applying the FreeSWITCH fix in manual upgrades

Author: ffdixon

_posts/2019-02-15-install.md

@@ -765,7 +765,7 @@ xmlstarlet edit --inplace --update '//param[@name="ws-binding"]/@value' --value
 yq w -i $TARGET freeswitch.sip_ip "$IP"
 ~~~
 
-If you use [bbb-install.sh](https://github.com/bigbluebutton/bbb-install) to install BigBlueButton, it will automatically apply the above changes.
+If you use [bbb-install.sh](https://github.com/bigbluebutton/bbb-install) to install/upgrade BigBlueButton, it will automatically apply the above changes.  If you manually upgrade your BigBlueButton server, you can add the above lines to [apply-conf.sh](/2.2/customize.html#apply-confsh) to have the above settings applied by `bbb-conf` when doing the [manually upgrade](/2.2/install.html#upgrading-from-bigbluebutton-22) steps.
 
 ## Configure BigBlueButton to load session via HTTPS