Do not turn off the router or close the browser window while the progress bar is moving. The process usually takes 2–5 minutes. Troubleshooting Common Issues
Updates often include "bug fixes" that resolve sudden Wi-Fi drops, overheating issues, or slow LAN speeds. Dsl-2877al Firmware
Look at the sticker on the bottom of your router. It will list a Hardware Version (e.g., Ver: A1 or A2). Firmware is specific to hardware versions. Installing Version B firmware on Version A hardware will fail or break the router. Do not turn off the router or close
Click or Choose File and select the .bin file you downloaded. Click Update or Upload . Dsl-2877al Firmware