C1240 K9w7 Tar 124 25d Ja2 Tar 26 [2021] -

Disconnect the Power over Ethernet (PoE) line or DC power jack from the Aironet 1240 unit.

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: Maps to Cisco IOS Release 12.4(25d)JA2 , an exceptionally stable and final milestone release for 802.11a/g legacy wireless deployments. 🔄 The Core Challenge: Lightweight vs. Autonomous Mode

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This procedure assumes your AP is currently in lightweight mode ( k9w8 ) and you need to convert it to autonomous ( k9w7 ). 1. Set Up the TFTP Server Download the c1240-k9w7-tar.124-25d.JA2.tar file. Place the file into the root directory of your TFTP server.

Leave the file as a strictly native .tar format. The AP needs to unpack the structure itself. Typo in file extensions (e.g., tar.default.tar ).

Are you executing this conversion via the or through the Web browser GUI interface ? Disconnect the Power over Ethernet (PoE) line or

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: Check your firewall settings on your PC and ensure your PC IP is correct. 🔄 The Core Challenge: Lightweight vs

: For the recovery process to work automatically, rename the file to c1240-k9w7-tar.default 2. Configure the Host PC Connect your PC directly to the AP’s Ethernet port. Assign a static IP of with a subnet mask of 255.255.255.0 to your PC. 3. Initiate the Recovery Disconnect power from the AP. Press and hold the MODE button while reconnecting the power. Continue holding the MODE button until the status LED turns (usually after 20–30 seconds), then release it. The AP will automatically request the file c1240-k9w7-tar.default

If your AP is not responding or stuck in a boot loop, you can use the hard reset button (Mode Button) to force an image download. Unplug power. Press and hold the button. Plug in power while holding the button.