Always select the correct hardware version (V3.20) from the dropdown menu on the TP-Link support website. Installing the wrong firmware can make your router unusable. Why Should You Update Your Archer C6 V3.20 Firmware?
: Users often find the US regional page harder to locate or update. If the US page is unavailable, do not use the EU firmware. Official Support Page for Archer C6 V3 (Select V3 from the dropdown) www.tp-link.com Alternative Firmware (OpenWrt) For advanced users, the Archer C6 V3 OpenWrt Wiki tp link archer c6 v320 firmware link