Air-ct2500-k9-2-0-0-0-fus.aes 【360p】

: This likely stands for "Field Upgrade Software," which implies that this software image is intended for field-upgradeable use on the device. It's related to how the device can be upgraded in the field (i.e., at a customer's site) by a network administrator or engineer.

FUS 2.0 addresses critical vulnerabilities at the bootloader level. air-ct2500-k9-2-0-0-0-fus.aes

: It is a prerequisite for moving to newer software versions (such as the 8.x series). For example, it is required if your current Bootloader version is lower than 1.0.20 . : This likely stands for "Field Upgrade Software,"

Certain high-level features like Application Visibility and Control (AVC) or NetFlow require modern hardware firmware to function correctly. air-ct2500-k9-2-0-0-0-fus.aes