hi my iphone is already flashed to metro pcs and it is currently active. its on 5.1.1, mms doesn't work, and i get slow internet not 3g. also i only pay $25 dollars for it not $40. if i buy this tool will i be able to just flash it over these settings to fix everything on 6.0. also i wont have to reactivate another phone, then flash the iphone, then reactivate the iphone right? i could just flash it active. sorry if its hard to understand but please reply. thank you.