AP# archive download-sw /overwrite tftp://<TFTP-SERVER-IP>/ap3g2-k9w7-tar.153-3.jbb1.tar
The most common failure is the loop. You uploaded the autonomous TAR, but the AP keeps looking for a Wireless LAN Controller.
The file name tells a detailed story about its purpose and compatibility:
The text refers to a specific Cisco IOS software image used for Autonomous (standalone) mode on several models of Cisco Aironet wireless access points. File Name Breakdown Ap3g2-k9w7-tar.153-3.jbb1.tar WORK
: This specific image version often defaults to the US country code for radio channel selection. 🔄 Installation and Conversion
Use the tar command to extract and install the software from your TFTP server:
Given the nature of the filename, let's assume it's related to a networking device (like a wireless access point) and you're tasked with developing features or understanding the capabilities of the device with the firmware or software package named Ap3g2-k9w7-tar.153-3.jbb1.tar . File Name Breakdown : This specific image version
Before initiating the firmware flash, ensure the following tools and environmental configurations are prepared:
The AP will pull the image via TFTP, extract it, and reboot as an Autonomous AP. Method 2: CLI Method (Already in Autonomous Mode)
Once ap3g2-k9w7-tar.153-3.jbb1.tar is installed, do not stop there. Optimize your AP: Method 2: CLI Method (Already in Autonomous Mode)
| Symptom | Likely Cause | Fix | |---------|--------------|-----| | TFTP: timeout | Firewall or incorrect TFTP server IP | Use show ip interface brief to confirm AP’s IP. Test TFTP with a different client. | | Not enough space | Flash memory full | Run delete /force /recursive flash:/old-image-name and squeeze flash: | | tar: invalid magic | Corrupted download | Re-download the file from Cisco’s official portal (requires SmartNet). Check SHA256 checksum. | | AP boots to rommon> | Boot variable not set | In ROMMON: set BOOT= flash:/ap3g2-k9w7-mx.153-3.jbb1/ap3g2-k9w7-mx.153-3.jbb1 then boot | | %Error opening tftp://... (Permission denied) | TFTP server read permissions | Ensure the file is world-readable or check TFTP server security settings. |
This guide will walk you through upgrading your Cisco Aironet Access Point to ap3g2-k9w7-tar.153-3.jbb1.tar using TFTP, whether you're converting from lightweight mode or updating an existing autonomous unit.
Before you type a single command, you must understand the naming convention. Cisco does not use random strings; every segment tells a story.