Please tell main jelly bean se wapis ice crean sadwish pe jana chahta hoon mene firmware and odin download kar lia hai masla bas yeh hai k volume down power and center button se me odin mode pe to chala jata hoon magar koi b laptop ya computer pe odin me show ni hota wo kehta hai ((gadget serial driver not found ))my handset is glaxy s2 plzzzzz help i m waiting