Follow these instructions in Terminal on both the client and server to download and compile rsync 3.0.6:
Download and unarchive rsync and its patches
cd ~/Desktop
curl -O http://rsync.samba.org/ftp/rsync/rsync-3.0.6.tar.gz
tar -xzvf rsync-3.0.6.tar.gz
rm rsync-3.0.6.tar.gz
curl -O http://rsync.samba.org/ftp/rsync/rsync-patches-3.0.6.tar.gz
tar -xzvf rsync-patches-3.0.6.tar.gz
rm rsync-patches-3.0.6.tar.gz
cd rsync-3.0.6
Apply patches relevant to preserving Mac OS X metadata
patch -p1 <patches/fileflags.diff
patch -p1 <patches/crtimes.diff
Configure, make, install
./prepare-source
./configure
make
sudo make install
Verify your installation
[09:38 AM] scotbuff@munchkin [~]-> /usr/local/bin/rsync --version
rsync version 3.0.6 protocol version 30
Copyright (C) 1996-2009 by Andrew Tridgell, Wayne Davison, and others.
Web site: http://rsync.samba.org/
Capabilities:
64-bit files, 64-bit inums, 64-bit timestamps, 64-bit long ints,
socketpairs, hardlinks, symlinks, IPv6, batchfiles, inplace,
append, ACLs, xattrs, no iconv, symtimes, file-flags
rsync comes with ABSOLUTELY NO WARRANTY. This is free software, and you
are welcome to redistribute it under certain conditions. See the GNU
General Public Licence for details.
You will likely have to add /usr/local/bin to your Path before /usr/bin so that you pickup the newer version of rsync rather than the dated shipped version that comes with OS X.