Upgrading
You can bring your NetBSD install up to date by downloading the latest snapshot of sources, unpacking it, then rebuilding. You could also download the updates using CSV, if desired.
Download the latest snapshot and unpack it:
ftp http://ftp.netbsd.org/pub//NetBSD/NetBSD-current/tar_files/src.tar.gz tar -zxf src.tar.gz -C /usr
