Sophos Intecept X Endpoint Install through Update Cache Server

Hi,

I would like to know ,How to install Sophos Central Endpoint Agent(XDR) through Update cache ? 

In my scenario Internet Access is completely block (Air gap network).I have installed update cache & message relay on one of my server. 

Then ran following command in cmd.

  • SophosSetup.exe --messagerelays=172.16.16.10:8190

Agent registered with Sophos Central through message relay. But could not download the software through update cache.

In here, Do I need to share warehouse folder of update cache server & include the path using --localinstallsource ??