galaxy s6 verizon repair

so i dont know what am doing wrong with this model sm-g920v.
the phone is blacklisted in usa. i already wrote cert which its clean
the phone is not getting any signal at all. i have try 3 and still the same.
galaxy s6 verizon . i also match meid in case. but nothing happen

can anyone solve this issue . ..

dont ask where i got the cert… ..$ $