youre gonna have to go up to 4.01 and then up to 5.00
once youre at 401,you can just use the m33 network update just make sure its enabled in your recovery menu.
and yeah 5.00 is awesome go all the way up to 5.00-6 you can speed up your ms read speed,use cxmb for ctf themes, you get a full qwerty onscreen keyboard, and more stuff too its totally worth it
if u have problems lemme know ill try n help u out
rep+ if i helpful