Fixes a memory leak issue that caused the router to slow down or require a hard reboot every few weeks.

In the GUI, go to Management > Update Software .

: Many older DSL-G225 models reached "End of Life" (EOL) status, meaning D-Link no longer provides active development. For these legacy devices, the "patched" status often serves as the final line of defense before users are encouraged to upgrade to newer hardware. Best Practices for Users Updating the

Historically, D-Link released several updates to address vulnerabilities and performance issues before the device's retirement: Firmware AU_1.0.6 (Released 09/11/2020)

This release specifically addressed security vulnerabilities and improved the firmware upgrade process.

In February 2025, a university research lab in Germany suffered a ransomware attack that originated from a DSLG225 unit left on a public VLAN. The attackers used the hardcoded SSH key to gain a foothold, then pivoted to a connected oscilloscope and data server. The lab lost two weeks of experimental data.

Now that your DSLG225 is patched and running smoothly, maintain security with these habits.

Early firmware versions were vulnerable to attacks where a malicious party could inject commands through the management interface, potentially taking over the router.