Follow these steps:-
Step 1: Once you have downloaded the firmware, open a web browser and enter "https://belkin.range/" in the Address bar, then press [Enter].
Step 2: Click Login.
Step 3: Enter your range extender's Password then click Submit.
NOTE: If you haven't set up a Password, leave the field blank then click Submit.
Step 4: Select Firmware Update.
Step 5:Click Browse... or Choose File button and select the firmware that you have downloaded, then click Open.
Step 6:Click Update.
Step 7:When the prompt appears, click OK.
Step 8:Another prompt would appear stating that the device will not respond during the update. Click OK and wait for the firmware update to finish.
If you have questions or need any assistance troubleshooting, just visit:
Belkin Wifi Extender Setup | Orbi Admin Login