Joining premium servers without premium?

[ballot]

Hi i got my friend's premium account and downloaded all dlcs

and at browseri run this little code from console

base._gameExpansionCheck=function (gameExpansion,platform,ownedGameExpansions){return true;}

so i can join any server without owning these expansions but bf4 shuts down after some and returns me

i get

"Game disconnected: you are missing content from the game" error

if i can fix this too i will be able to join premium servers does anyone have idea?

edit: i can join any premium server without any error which is currently they are playing on normal non-premium maps but when they change the map to any premium map i get kicked