1. How to deploy this patch on the server?
Just like you do on client side, except for that you will want to use the Server Version of the IL-2 Executable Selector.
Does the up3 server need to deploy the same version of the patch as the client?
Not yet.
So far we're fully backwards compatible.
Future update however will introduce new aircraft and maybe other objects, which naturally breaks compatibility.
We are planning to implement this in a way that users with outdated game versions can still connect to and play on newer Ultrapack Servers, however you will only get the full playing experience if you are updated to the same level like the Server you're playing on.
2. If I want to add other maps downloaded online, how should I modify the mod configuration of the server and client?
Just like you do with maps on any other IL-2 version.
3. If I want to add other aircraft downloaded online, how should I modify the mod configuration of the server and client?
It's basically the same like adding aircraft to any other Il-2 version.
Originally Ultrapack was 4.10.1 based so aircraft using newer features from e.g. 4.12.2 won't work.
We're slowly porting all the new required functions to Ultrapack so that eventually planes from other game versions, be it 4.something or 5.something, will just work "out of the box".
Mike