1. Запустить файл css_update_v50-56.exe
2. Указать папку с установленным клиентом Counter-Strike: Source
3. Следовать инструкции установочника.

# Fixed performance issues and memory leaks related to scoreboard display.
# Fixed long-standing bug in which a player would see another player in a grenade-throwing animation when they no longer had a grenade as their active weapon.
# Fixed animation problem (“crab walk”) caused by aborting bomb plant by using the drop command.
# Fixed several ragdoll animation problems related to cl_minmodels.
# Fixed several crashes that could be caused by user modified .res files.
# Run sounds are no longer heard from players walking with the Scout equipped.
# Player’s last match stats will no longer be updated if the player did not actually participate in the match (e.g. only spectated).
# Flagged bot_mimic and bot_flipout as CHEAT vars.
# Fixed “Cold War” achievement so that it now requires the correct number of opposing players.
# Fixed hud_showtargetid; added hud_showtargetpos for setting the on-screen location of the targeted.
# Fixed bug in which the client camera would jump to another player if the player died when mp_fadetoblack is enabled.
# Removed extraneous/incorrect help text for nightvision goggles.
# Fixed bug in which the spectator UI would disappear after a mode switch or similar renderer change.
# Changed the size of the bomb icon on the spectator UI