D-Link occasionally adds new interface options or support for newer networking protocols through software updates. Step 1: Identify Your Hardware Version (Critical)
To download the official firmware for your D-Link DSL-2750U , visit the D-Link regional support site that matches your location and hardware revision. Using the wrong regional or hardware firmware can permanently damage (brick) your router. Official Download Portals Australia/NZ: D-Link Support Resources for Rev A and Rev T versions. D-Link India Firmware Portal download hot dlink dsl2750u firmware
– Primary source
Before you search for a download link, you must identify your device's hardware version. D-Link released several versions of the DSL-2750U (e.g., T1, V1, U1, C1), and Turn your router over. Look for a sticker on the bottom. Find the text labeled H/W Ver: (Hardware Version). Note down the version (e.g., "T1" or "V1"). Step 2: Where to Download the Latest Firmware D-Link occasionally adds new interface options or support