im just goin to keep my old 6700

it seem such an risk to get an upgrade and i get the wrong one and i cant recieve calls during evdo. i know the thign said dont get one thast 1.14, one that after april and one with aku 2.1 but some of the ones i seen there was made after april i check 3 of them and i dotn want him to pull take out every 6700 just so i can get one. is there an hack that can change the keys blue?