samsung n900a convert to n9005

hello friends is there is any way to convert samsung n900a to n9005 bcause on backside sticker there is model 9005 and inside there is n900a. whenever i was tried to flashing with 9005 it failed. customer was said when they was bought it was 9005 after they gave to another shop they was flashed with n900a.. is it possible.. so please suggest friends..