AP9617 Firmware Upgrade: Stuck on v2.5.3 Due to Two AOS Upgrades Required

[swl681]

AP9617 Firmware Upgrade from v2.5.3 to v3.9.3

When attempting to upgrade the Network Management Card firmware to the latest version, I’ve encountered the following error message: "Detected early version, two AOS upgrades required."

From my understanding, this message indicates that my current firmware version is too outdated for a direct upgrade to the latest release. It seems that intermediate firmware versions (specifically AOS files) must be applied first before I can proceed with the most recent update.

Unfortunately, I don’t have access to those older firmware versions, and I haven’t been able to locate them through standard support channels or on the APC website. I would greatly appreciate any help in obtaining the necessary prior AOS updates, or if someone could point me to a resource or procedure to resolve this issue.