Modern Soldier patch from 1.0 to 2.0 just replace the files by those new files.
Features of the 2.0 version :
New weapons : M4 /MP5 /M249 /M82A1 /SCAR-L /SCAR-H /AK107 /AS VAL /PKM /SVU /M92
New factions : US Army/US Marines/Russian Airborne Troops(VDV)
New skins for the factions
Changes on the Russian Ground Forces
Fixed infinite gun fire sound bug
Changes in weapons kits and maps teams
Change in storyline
Changes in vehicles of the maps
Credits : AI = Void(ESAI)/Dr.EvilTag's AI
Weapons=M.Combat /Eversmen /REQUIN94 /Lt.Nomad /EnemySniper /DICE /7game /InsanityPays /InSovietRussia /Turbosquid /ReapFreak /Red Duck Inc. /Twinkie Masta /Kimono /NightmareMutant /B0t
Maps = Foxfort /Ti_GER arn354 /PACMAN /JONES /spfreak /mr.burns[GER] /HAYABUSA /Dies-World.com
Skins = spartan117gw/spush/Tri-Tard/Bubbles/SatNav
HUD = ACE_Sweden
Icons = frank_beans| Kysterama
Mod = DarkWolf985 (Me)
Storyline and help = _CopyCat_
Picture = Iamsointense
...