try it on normal or your nonfavorite pokemon Try on a pikichu
at mt. pyre
Evolve Snorunt. Snorunt can be found in Shoal Cave Ice Room
you can't get the black flute in leaf green but you can in Pokemon ruby, sapphire and emerald then trade it to leaf green.
No, Zubat cannot learn Flash.
The following Pokemon that you can easily get to learn Flash in Sapphire: Beautifly or Dustox Lotad or Lombre Oddish Gloom
You cannot get Flash Cannon in Sapphire, it was a new move made for Diamond, Pearl and above. It wasn't made when Sapphire, Ruby, Emerald, Leaf Green or Fire Red came out.
Find an Abra to give flash in the cave in dewford.
go to a man in purple in a cave.
steven and if you talk to the men he will give flash
ABXY
Sadly, no. The creators of the game forgot to add in the Pokedex, so trading is impossible without GameShark. :(
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.