Here’s a technical write-up for the firmware file ap3g1-k9w7-tar.152-2.jb.tar, suitable for documentation, release notes, or an internal knowledge base.
ap3g1: This identifies the hardware platform. The "G1" generation typically covers the Cisco Aironet 1260, 3500, and 3600 series Access Points. Ap3g1-k9w7-tar.152-2.jb.tar
In the world of Cisco IOS, the file naming convention tells you everything you need to know: : Specifies the hardware platform (Cisco 3500 series). : Indicates the Autonomous (standalone) feature set. In contrast, signifies a Lightweight/CAPWAP image. : The specific IOS version (15.2(2)JB). Here’s a technical write-up for the firmware file
152-2 corresponds to Cisco IOS version 15.2(2), a legacy release.