| Issue | Solution | | :--- | :--- | | | 3560 flash is typically 32 MB. Delete old image: delete flash:old.bin , then squeeze flash: to recover space. | | Switch boots old image | Check show boot . Use no boot system then reset correctly. Also verify config register: config-register 0x2102 | | License level not IP Services | On 3560, the image determines features (no separate license file). If show version shows "IP Base" or "LAN Base", you booted wrong image. | | K9 encryption not enabled | Run license accept end user agreement and crypto key generate rsa to activate SSH. |

Once the switch reboots, check the version to confirm the upgrade was successful.

: Cisco officially stopped providing software maintenance and security updates for this release train years ago.

You should see:

Elias had searched the encrypted archives for hours to find this specific image—the final, most stable release of the "IP Services" feature set. It wasn't just a firmware update; it was a life-support patch.

This topic is highly specific and relates to networking, specifically Cisco Catalyst 3560 series switches.

For production, upgrade to a or at least a 3560-CX with IOS 15.2(7)E.