The process takes approximately 2–3 minutes. Do not turn off the router or close the browser until the update is complete and the router reboots. Critical Tips for Success
unless you have a serial console and know how to debrick. There is no stable, wireless-supported OpenWrt build for the V2. Stick with the official D-Link firmware linked above for safety. dlink dsl2750u v2 latest firmware update link
Here’s a sample review for the latest firmware update, including a hypothetical link (note: always check the official D-Link support page for real links). The process takes approximately 2–3 minutes
Using the wrong firmware (e.g., for V1 or V3) will permanently brick your device. Always verify your hardware version before proceeding. dlink dsl2750u v2 latest firmware update link