Ap3g3-k9w8-tar.153-3.jpo.tar May 2026

Understanding the filename helps identify exactly what hardware and software type this applies to:

  • k9w8: Indicates the software feature set.
  • tar: The file extension. This is a Tape ARchive file. In the context of Cisco APs, this is the bundle file used for upgrades; it contains the actual IOS .bin file and other necessary radio firmware files.
  • 153-3.JPO: The software version number. This corresponds to Cisco IOS Release 15.3(3)JPO.

    • Use this if the AP is stuck in a boot loop or has no valid image. Ap3g3-k9w8-tar.153-3.jpo.tar

    Steps:

    Let’s address the elephant in the room: Cisco 15.3(3) is ancient. The first 15.3(3)JE build dropped in May 2014. The JPO revision is from late 2015 or early 2016. Running this code today exposes your network to: k9w8 : Indicates the software feature set