go to dewford city and go into the cave near there there is a hiker inside talk to him after beating brawly the gym leader to get flash.
you get a dig at the fossel manic house and you can get a heart scale by catching a luvdisc by by the way you go to victory road on sappfire
wtf! dimwit... catch rayquaza in sky pillar, groundon in terra cave, and kyogre in the submarine place.
once you finsh the sappfire game you can go lab and get the johto Pokemon to start the johto league now and train them to beat the johto league
In Pokemon Platinum, Flash is a TM.
how do you use flash? just go to pokemon and go to the pokemon that knows flash. press A and it will say in blue text "Flash" select that and it will use Flash. it's very useful in dark caves.
flash will work on buttefree and zapdos
Most electric type Pokemon can learn flash.
At flashy flash flash city
In Pokemon diamond many Pokemon can learn flash for eg. Electric Pokemon such as Pachurisu Pichu and Luxray all (eveloutions) and yeah just experiment and see what can learn flash!
all the Pokemon on dimmond that can learn flash can still learn flash in the platinum game too
When a Pokemon has the move Flash, you go into Party, then select the Pokemon with Flash using the 'A' button and there should be an option that says "Flash". It is only usable in dark locations or within battle.
Most electric type and psychic type pokemon can learn flash.