FreeBSD Update actually rocks hard for binary patching your system. Easy to use with 1 command line, and also comes as part of the 6.x branch if I’m not mistaken!
james@clarkee.co.uk /usr/home/james# freebsd-update fetch install
Looking up update.FreeBSD.org mirrors… 1 mirrors found.
Fetching metadata signature from update1.FreeBSD.org… done.
Fetching metadata index… done.
Inspecting system… done.
Preparing to download files… done.The following files are affected by updates, but no changes have
been downloaded because the files have been modified locally:
/etc/rc.d/jailNo updates needed to update system to 6.2-RELEASE-p3.
No updates are available to install.