IF you mean is added new pokemon? is not based save file, save file is not stored image for pokemon....... and you must hack ROM itself if you want a new pokemon. is simple logic, if you want wifi battle with someone using that, you can see that pokemon but in another side is not. Because to added new pokemon is too complex because is not need sprite only, is need another data is more than 6 narc file.......
fact :
- save file is can't stored a pokemon data (is include script, sprite that pokemon), save file is just stored a config data of that pokemon so is can't added a new pokemon......
- pokesav and pokegen is same program, is just manipulate save data, added a pokemon (not CREATE NEW POKEMON), so you question is totally wrong with you mean.....
- if you want added new pokemon, you just hack ROM file NOT SAVE FILE, is different data.
- in ROM is not used PNG format..... and until now to added new pokemon on ROM is impossible since is need hack overlay until now undiscovered how to doing that.
moderator please lock this thread....... thank you