May I ask a noob/newb question? I'm interested in the idea of hacking my FireRed to make it even better and revamped, but I have two concerns:
1) Legality Issues-Nintendo dislike use of all ROMs/emulators but its not like I'll distribute or steal profit from hacking.
2)Can I put the result of editing the game back onto my actual FireRed cartridge? I don't want to buy a flashcart, nor do I wish to resorting to playing FireRed on PC. I mean, if Pokesav edits the save on cartridges, could I do the same with hacking? I doubt it, cuz real carts don't have a cable slot

Also, don't flashcarts look dodgy like in public etc?