: The 3502i only supports Wi-Fi 4 (802.11n) and is missing modern security protocols like WPA3.

Because the 3500 series is , the files are no longer in the primary navigation for modern products.

If your AP currently has "CAP" or "LAP" in the name (e.g., AIR-CAP3502I), it is in Lightweight mode. To switch: : Connect via the console port (9600 baud).

: Use the archive command in the AP's CLI: archive download-sw /force-reload /overwrite tftp://[Your_IP]/ap3g1-k9w7-tar.153-3.JD.tar