Updating your modem's firmware can bring numerous benefits, including:
Log back in (default creds re-applied after reset). Re-enter your ISP username/password, Wi-Fi SSID, and security key.
The router can automatically find and notify you of approved firmware on the D-Link update server. Security Patches:
Here is the direct navigation link and instructions to find the correct file:
A common mistake users make is ignoring the Hardware Version (usually printed on the sticker on the bottom of the router).