IRLP software updates happen automatically overnight, as long as your node is not connected to a node or reflector when the software update software executes.  Some IRLP node owners don't know it but these updates can also be requested manually, at any time, by doing the following:

1. Login to your node as user repeater.
2. Type, "decode 73", press enter and wait for the node to disconnect from whatever node or reflector it is connected to.
3. Type, "update files" and press enter.  Your IRLP Node will verify with the server that it has the latest software using rsync.  If there are any files which have been updated on the server, then it will automatically download them.  When it finishes verifying/downloading, your IRLP software will be up-do-date.
4. There's no need to reboot as the updates are applied straight away.

During the update process, you will probably see a message to the affect of, "Client is very old version of rsync, upgrade recommended."  This can be safely ignored.  The version of rsync that ships with IRLP is an older version for compatibility reasons, but is fully functional.