Firmware updates can address security and reliability issues, but they must match the exact router model and hardware revision. Use the vendor or internet provider's supported update method. An unrelated firmware file can damage the setup rather than improve playback.
Read the model information
Similar product names can have different hardware revisions. Check the label and management page privately, then use the correct documentation. Do not install a file merely because a forum describes it as faster for streaming.
Prepare for interruption
Save the configuration if supported and choose a suitable time for the household. Follow the manufacturer's power and restart instructions. Interrupting an update can create a more serious problem than the original buffering symptom.
Retest the original issue
After updating, verify internet access and replay the same source under comparable conditions. Record the installed version and result. Security maintenance can be worthwhile even when it does not change an unrelated media-source fault.
