: Refers to the Cisco IOS Release version 15.3(3)JF15 . Understanding Access Point OS Images - Cisco Community
ap3g1-k9w7-tar.153-3.jf15.tar Autonomous (Standalone) IOS software image for legacy Cisco Aironet 3500 and 1260 series access points ap3g1-k9w7-tar.153-3.jf15.tar
The most common manual use of this file is upgrading an AP or converting an Autonomous AP to Lightweight mode via TFTP. : Refers to the Cisco IOS Release version 15
ap3g1-k9w7-tar.153-3.jf15/ ├── info # Version and compatibility manifest ├── ap3g1-k9w7-mx.153-3.jf15 # Main image (Linux kernel + FS) ├── ap3g1-rcvk9w8-mx.153-3.jf15 # Recovery image ├── fpga_2_6_2.bin # FPGA firmware for radio chains └── bootloader_upgrade.bin # Bootloader (U-Boot) patch ap3g1-k9w7-tar.153-3.jf15.tar