Teach to a Pokemon in your party that is able to. When you're in a dark area, open your party and select the Pokemon that you taught it to. 'Flash' should come up in the options, just press that.
You need a script editor such as Pokescript or XSE. I recommend XSE, myself. To quickly change text in the game, you can use Advanced Text. XSE Helper is also good for beginners.
Simple you have to Reboot youR game with youR action Replay inseRted
You can't.
You can't its not a move in emerald.
There are a large range of Pokémon which are capable of learning the move Flash. For example, Pikachu is capable.
HM 05 is flash
No...You have to have the TM for any Pokemon to learn it...
in emerald hm05 is flash, you find it in granite cave but you have to have the knuckle badge to use it outside of battle
You get it in the Granite Cave in Dewford Town.
In Registeel's cave, you read the inscription then head to the direct center of the room and use Flash.
In Emerald there are cave in which you get them. I THINK you need dig dive and flash.
NO you can not play Pokemon emerald in Coloseum.
you use pal park to get emerald Pokemon to pearl bur you can't transfer them back to emerald
you win them from gyms
Read the inscription and then go to the middle of the room and use Flash. The door will open and you can battle Registeel at the usual Lv. 40