Here are two links containing firmware, documentation, and applications for the DCS series (and other D-Link products). If you purchased your DCS in the United States and you download firmware from D-Link Taiwan, please make sure the download file contains the letters/words "ww" or "world wide" release. Selecting a version specific to another country may render your device inoperable.
D-Link Taiwan contains some world wide release firmware files (e.g. DCS-932L) not available in the U.S. site.
United States: ftp://ftp.dlink.com/Multimedia/