If the upgrade failed mid-process, the router firmware is corrupted.
Upgrading the firmware of your TP-Link Archer C5 v4 router is the best way to ensure optimal performance, patch critical security vulnerabilities, and improve network stability. Manufacturers regularly release updates to fix bugs and enhance compatibility with newer devices. tp-link archer c5 v4 firmware upgrade
Look at the left-hand sidebar menu, scroll down, and click . Select Firmware Upgrade from the dropdown options. Locate the Manual Upgrade section. Click the Browse or Choose File button. Select the extracted .bin file you downloaded in Step 1. Click the Upgrade button. Step 4: Allow the Router to Reboot A progress bar will appear on your screen. Do not close the browser window. Do not unplug the power cord from the router. Do not disconnect the Ethernet cable. If the upgrade failed mid-process, the router firmware