Sorry for resurrecting old thread but for information I have Il2 Ultimate Edition and its "1946" with build v4.11 Saves many GB downloads from original 1946
But don't use default install in \ProgramFiles or \ProgramFiles(X86) as windows copy protects these folders to changes...very annoying.
When patching you just need to change the extract path from \il21946 to your \Il2UltimateEdition.