The latest firmware for the D-Link DSL-224 (Version 3.0.10, released November 2022) can be downloaded directly from the official D-Link FTP Server
Safety checklist before updating
Wired Connection Only: Never update firmware over Wi-Fi, as a signal drop can brick your router. Use an Ethernet cable. dlink dsl224 firmware update download link
Always download firmware from official sources to avoid "bricking" your device with the wrong file.
D-Link FTP Server (Regional): For specific older versions or regional releases (like R1 or T1), the D-Link FTP Repository lists firmware versions including 3.0.8 and 3.0.10. The latest firmware for the D-Link DSL-224 (Version 3
Once you've downloaded the firmware file, follow these steps to update your DLINK DSL-224:
Log back in (default creds re-applied after reset). Re-enter your ISP username/password, Wi-Fi SSID, and security key. D-Link FTP Server (Regional): For specific older versions
Depending on your region and hardware version, you should use the official D-Link Technical Support portal to find the correct file.