The file is a Cisco IOS software image used to run Cisco Aironet access points in Autonomous (Standalone) mode . This specific image, version 15.2(2)JB, is compatible with various legacy Cisco access points, such as the 1040, 1140, 1260, and 3500 series. Understanding the Firmware Components

Louann Tandy. ... In this example I am using 3500 series AP & therefore I have downloaded ap3g1-k9w7-tar. 152-4. JA1. tar & ap3g1- Google Groups C1240 K9w7 Tar 124 25d Ja2 Tar 26 - Google Groups

: You generally need a valid Cisco service contract (Cisco SmartNet) linked to your account to download these images legally.

: Code necessary for the wireless hardware to function.