Unfortunately, Avid has removed the Eleven Rack Expansion Pack from their main storefront. You must locate the official legacy files:
The Eleven Rack Expansion Pack firmware version is a critical maintenance update for the Avid Eleven Rack. Primarily, eleven rack expansion pack 2.0.1 firmware update
is the final, most stable firmware release for the Eleven Rack. It is the cumulative update that includes all Expansion Pack content plus crucial bug fixes from the initial 2.0.0 launch. Unfortunately, Avid has removed the Eleven Rack Expansion