mobile

Today i am update my phone to official lolipop from samsung and... :D
My wifi button don't work he is always grey :(
I know what to do but.....i don't have root permisions :(
For root i need to instal cwm but all computers don't recognize my phone :(
Now i need update.zip to flash in this stock cwm to get new cwm with install zip from sd :)
Or any other way to install cwm or twrp :P
Can anyone help me?