Tool Editor for Creating/Patching Player's Picture

What is the Tool Editor for Creating/Patching Player's Picture??

and what is the format file for picture of players?? is it .iff too??

thanks in advance guys

NBA2KX Mod Tool (2K12 Supported) edit the portraits iff file with dds files, tutorials in the beginners thread in the tutorial section

thank you very much for all the help/tips/advices/// you will be blessed...