No need for first edition cartridges
Ok, this glitch may take longer, but it works for people who have the revised cartridge of Zelda. You go through the game as a kid without the Kokiri sword. You do that by using the Crooked Cartridge trick to get out of the Kokiri woods, or to get past Mido to see the Great Deku Tree. After you beat the Deku Tree, Jabu-Jabu, and the cavern, go to the temple of time as usual. Then when you come back as an adult, you don't have the Master Sword!!!! It's cool. When you go back, you have the kokiri sword, and when you return to being an adult, you have the master sword, so you can't warp without messing up what you did. Good-Luck!!