Ap3g2-k9w7-tar.153-3.jpj3.tar

: Indicates the file is a compressed archive containing the IOS image along with the necessary web interface files (GUI). 153-3.jpj3 : The specific software version, which is IOS 15.3(3)JPJ3 Use Cases and Features Can't entering a web browser - AP 3702i - Cisco Community

: This is the ED (Early Deployment) build identifier. It often indicates a specific maintenance rebuild or patch for the 15.3.3 codebase to fix a specific bug or hardware compatibility issue. ap3g2-k9w7-tar.153-3.jpj3.tar