C1240 K9w7 Tar 124 - 25d Ja2 Tar 26

The Cisco Aironet 1240 series typically runs IOS 12.4(25d)JA2 or similar.
A common valid filename pattern:
c1240-k9w7-tar.124-25d.JA2.tar

Your string appears to be a broken or concatenated version of:
C1240 K9w7 Tar 124-25d JA2 Tar 26
→ Possible meaning: firmware 12.4(25d)JA2 plus an additional tar archive version 26 (patch or driver update). C1240 K9w7 Tar 124 25d Ja2 Tar 26

| Component | Possible Meaning | |-----------|------------------| | C1240 | Cisco Aironet 1240AG Series Access Point | | K9w7 | Encryption enabled (K9), regulatory domain W7 (variant of -W for FCC?) | | Tar | File format: .tar archive containing firmware/OS | | 124 | Possibly firmware version 12.4 (IOS version) | | 25d | Build 25, fourth revision (d) | | Ja2 | Unknown; maybe a bootloader or wireless driver bundle | | Tar 26 | Another .tar archive, version 26 | The Cisco Aironet 1240 series typically runs IOS 12

Date: April 24, 2026
Prepared by: Network Firmware Analysis Team version 26 | Date: April 24