[Salmo]

UP2.1 is basically a collection of mods bundled together. It's very popular & includes some mods founds here at AAS. UP2.1 also has a mod-switcher program to easily let you switch from one combination of mods to another without having to manully manipulate files. There is also a nifty autoupdater utility that will make sure you always have the latest version of the pack.

This might give you some info http://ultrapack.il2war.com/index.php/topic,2088.0.html

See aslo http://ultrapack.il2war.com/