[CLIENT] Update failed

Ever since patch 7.1 I go into the loading screen after champ select and my game crashes and I have to reconnect with a bug splat, I tried to reconnect and it repeatedly sent me back to reconnect game, so I exit out and reload the client and get "Update failed please check the logs" I've tried alot fixes for this even uninstalling and reinstalling league and I still have the error. Pls help....