The /overwrite command wipes the old IOS, and /reload reboots the AP once done.
AP# archive download-sw /overwrite /reload tftp://<tftp-server-ip>/ap3g2-k9w7-tar.153-3.jf15.tar
Once the AP reboots, verify the version matches your expectation:
Cisco follows a strict, highly descriptive naming convention for its Access Point (AP) operating system files. Breaking down ap3g2-k9w7-tar.153-3.jf15.tar reveals exactly what hardware and feature sets it supports: Ap3g2-k9w7-tar.153-3.jf15.tar
: The archive format containing the actual IOS binary, the HTML GUI files, and radio firmware. Why Use This Specific Version? files.happyfile.nethttps://files.happyfile.net 1700_2600_2700_3600_3700 - HappyFile by PeckServers
This firmware is the for the 2600/3600/3700 series. It represents the mature endpoint of Cisco’s legacy IOS for access points. Use it if:
If using Windows 10/11, some users have found better success using a machine or a Linux-based TFTP server. 404 Not Found: The /overwrite command wipes the old IOS, and
The file ap3g2-k9w7-tar.153-3.jf15.tar is a specialized software bundle used to convert or update Cisco Aironet 2700 and 3700 series Access Points to .
: Indicates support for strong cryptographic encryption (SSH, HTTPS, WPA3/WPA2 enterprise security).
| Issue | Solution | | :--- | :--- | | | Load a recovery image ( rcvk9w8 ) first to overwrite the lightweight partition, then load the k9w7 image. | | AP gets stuck in boot loop (ROMMON) after upgrade | Use the bootloader method (Method 2 above). Ensure you set the correct IP parameters for the AP and TFTP server in ROMMON. | | AP has an IP address but is unreachable via Telnet/SSH | Access the AP via the console cable and check the running configuration. By default, the AP may have no ip http server or no ip http secure-server enabled for security. Re-enable them. | | Unable to download firmware from Cisco | The AP models are EOL. The software is not available for public download. Consider purchasing a support contract for an active device or using a valid Cisco account with appropriate entitlements. | Why Use This Specific Version
For network administrators, hobbyists, and IT professionals working with legacy Cisco wireless hardware, the file is a critical resource. This TAR file serves as the autonomous firmware image for several legacy Cisco Aironet access points, enabling them to operate as standalone devices without the need for a Cisco Wireless LAN Controller (WLC).
This specific software release enables legacy enterprise-grade hardware to run completely independently without requiring a dedicated physical or cloud-based Cisco Wireless LAN Controller (WLC). It is highly sought after by network engineers, homelab enthusiasts, and small business IT administrators looking to repurpose older enterprise networking gear.
tar -xvf Ap3g2-k9w7-tar.153-3.jf15.tar