In build systems, tar indicates a compressed archive. A filename like ap3-g2-k9-w7-tar-1533-jpn1.tar is plausible for a router firmware. The user may have accidentally repeated .tar. They want to know if this build is better than a previous one (e.g., 1532 or a different region code like usn1).
The JPN1 tail indicates Japanese power limits. If you are not in Japan, you are legally restricted to lower transmit power. Replacing the AP is the only safe fix. ap3g2k9w7tar1533jpn1tar better
Search on Reddit (r/homenetworking, r/cisco), SNBForums, or technical Japanese forums (2channel, etc.). Use quotes: "ap3g2k9w7" or "tar1533". In build systems, tar indicates a compressed archive
The 1533 in the string refers to IOS version 15.3(3) (specifically 15.3(3)JN). The 1533 in the string refers to IOS version 15
Is this file "Better" for you?