Until then, the v4 remains a capable AC1200 router. The best way to extend its lifespan is to keep it updated, place it in a well-ventilated area (heat kills routers), and perform a factory reset once a year.
This guide explains why to update firmware, how to check your Archer C5 v4 firmware version, and provides step-by-step instructions (automatic and manual) plus troubleshooting and safety tips. tplink archer c5 v4 firmware update
This method works on Windows, Mac, or Linux. Until then, the v4 remains a capable AC1200 router
, meaning you often won't find a generic firmware file on the standard TP-Link download page The Quest for the Firmware tplink archer c5 v4 firmware update