: Connect your phone to the router’s Wi-Fi, open the app, and go to Tools > System > Firmware Update . Troubleshooting & Special Cases Download for Archer C5 V4 - TP-Link
TP-Link does not release monthly updates for the Archer C5 v4, as it is a legacy AC1200 router (released circa 2018-2020). You should check for firmware . tp-link archer c5 v4 firmware upgrade