This file is a Cisco Access Point image bundle, intended for the series access points. It contains lightweight AP (k9w7) software version 15.3(3)JF15 , packaged as a .tar archive for upgrade via TFTP, FTP, or the AP’s console/web interface.
on your TFTP server (e.g., tftpd64 on Windows, or atftpd on Linux). Example path: C:\TFTP-Root\ap3g2-k9w7-tar.153-3.jf15.tar download ap3g2-k9w7-tar.153-3.jf15.tar
and citing a specific security vulnerability (PSIRT) relevant to your current version. Quick Installation Guide (TFTP Method) Once you have the file, you can convert your AP using these standard steps: Lightweight to Autonomous (vice versa) Conversion… This file is a Cisco Access Point image
For firmware images: