ap# archive download-sw /overwrite tftp://<server-ip>/ap3g3-k9w8-tar.153-3.jpo.tar
Cisco uses a strict convention for naming its wireless software images. Each segment of the filename provides specific technical details about the software capabilities and target hardware.
If you find ap3g3-k9w8-tar.153-3.jpo.tar on your APs today, your immediate goal should be to or 15.3(3)JK13 (the final 15.3 releases). Here is the safe method: Ap3g3-k9w8-tar.153-3.jpo.tar
: Indicates the feature set and mode. "k9" signifies strong encryption (3DES/AES), and " w8 " indicates a Lightweight (CAPWAP) image meant to be managed by a controller.
: Represents the Access Point 3rd Generation (Wave 2) hardware platform family. This image targets Wave 2 802.11ac hardware, specifically the Cisco Aironet 2802 Go to product viewer dialog for this item. Go to product viewer dialog for this item. , and related hardware lines. Here is the safe method: : Indicates the
: Release 15.3(3) is a legacy version. Cisco officially ended vulnerability and security support for many 15.3(3) variants around 2017. It is recommended to migrate to Catalyst 9800 Series Controllers and newer Wi-Fi 6/6E hardware for modern security standards. Release Notes for Cisco IOS Release 15.3M&T
Ensure you are not trying to load an ap3g3 image on an ap3g2 (Aironet 2600/3600) device. This image targets Wave 2 802
: A specific naming string generated by a unique backup script or internal corporate server.
: The hyphen - and dot . are often used to separate different parts of a filename or identifier, suggesting that tar might indicate a type of file or process, and .153-3 could imply a version or build number.
| Access Point Series | Supported Models & Details | | :--- | :--- | | | Indoor: 2802e, 2802i | | Cisco Aironet 3800 Series | Indoor: 3802e, 3802i, 3802p; Outdoor: 3802e | | Cisco Aironet 1560 Series | Ruggedized Outdoor: 1562e, 1562d | | Cisco Aironet 4800 Series | Indoor: 4802 | | Cisco Industrial Wireless | Industrial: 6300, ESW6300 Series |
Understanding what this file does, how to decode its naming convention, and how to deploy it is vital for network engineers managing legacy Cisco infrastructure. Decoding the Firmware Nomenclature