You should see a list of release dates. The top file is the latest version.
The Archer C5 V4 is a capable AC1200 router, but its firmware ecosystem is a minefield. Always triple-check hardware version, region, and flash size before clicking “Upgrade.” When in doubt, leave it on the working firmware—a stable router beats a bricked one. tp-link archer c5 v4 firmware download
Always download firmware from the official TP-Link support portal to ensure you get a verified, safe file. You should see a list of release dates