For a visual walkthrough of the manual update process, refer to this guide:
: If you experience stability issues after an update, a factory reset can help. Use the TP-Link Password Reset Guide if you get locked out. tp-link archer c5 v4 latest firmware download
A blue bar appeared. 10%... 40%... The router’s lights blinked frantically: Power, then WAN, then all LAN ports in a cascading wave. For a visual walkthrough of the manual update