Can I upgrade the AEC firmware directly from 126.96.36.199 through 188.8.131.52 to the latest version 184.108.40.206 v1?
Unfortunately you can't do a direct upgrade to the latest version as there is a security vulnerability patch that isn't in the 220.127.116.11 firmware.
You would need to upload firmware 18.104.22.168 FIRST and then you can got to 22.214.171.124
The 126.96.36.199 firmware is available on our website with the file name - Software (AEC2.1_FIRMWARE_Upgrade (Archive)). It contains versions 2.1.8-188.8.131.52