Step 1: Open an Internet browser (such as Internet Explorer) and enter http://dlinkrouter.local or http://192.168.0.1 into the address bar. Press Enter.
Step 2: Enter the password for your Admin account in the field provided. If you have not changed this password from the default, leave the field blank. Click Log In.
Step 3: Move the cursor to the Management tab and then click Upgrade from the drop-down menu.
Step 4: Click the Check For New Firmware button. If the DIR-880L finds new firmware, then the firmware will be upgraded automatically.
Warning: No not turn off your router during the firmware upgrade process.