There is an error at the URL of the upgrade-5.211.65-20.sh at (http://wiki.freepbx.org/display/FD/FreePBX-Distro-5.211.65). It is http://upgrades.freepbxdistro.org/stable/5.211.65/upgrade-5.211.65-19.sh but it should be http://upgrades.freepbxdistro.org/stable/5.211.65/upgrade-5.211.65-20.sh
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