Default [Q] missing portable hotspot wifi

previuosly before i do ##RTN# my LG LS970 have portable wifi hotspot, but now after i do ##RTN# the portable wifi hotspot is disapear. i try to flash back to ZVB and update to ZVC there is no portable wifi hotspot. can anybody help me how to make itu appear again?

and one more thing, the operator text change from sprint to chameleon

*excuse for my english