I have a evo 3d. I rooted it to custom rom, The rom i used is for sprint. Everthing was working good. I went back and fourth between the sprint and vm. now i cant get my wifi to work on either rom. Is there a factory vm rom i can use to go back to 100% factory. I cant seem to find one anywhere, everything is sprint. Also whats the advatage of flashing it to sprint rom.