How do you get past the man on route 230 in Pokemon platinum?

Answer 1

u need to complete the whole Sinnoh pokedex, then go to professor rowan and hell know that u completed it, professor oak upgrades ur pokedex to national. then once u go back to that area the men blocking ur way to route 230 will be gone. if u played through the game by fighting every trainer and not skipping one trainer then u have seen every Pokemon. one tip i can give u about a Pokemon u haven't seen is manaphy, so just go the Pokemon Mansion in route 212 and go to the room with the owner in there, there will be a book, press a to view it and u will see a picture of manaphy, that counts as seeing the Pokemon, till then u shoud be done with completing the Sinnoh dex.

good luck