Can you move a modded DS game ROM into physical copy then play it on unhacked 3DS?
I have a unhacked 3DS handheld which contains many games, and I won't hack it because it is so smooth and well maintained like new. And I have so many physical games.
There's a certain game called Gyakuten Kenji 2 or fans calls it Ace Attorney Investigation 2 for NDS and never released outside Japan. But somehow they managed to translate and mod the ROM with English patch. I have a bad habit when into a series collection, when into collecting physical copies I tend into obsession.
My question is, can we move the modded ROM into a physical copy then play it on the unhacked 3DS handheld?
No, you can't.
As the full form of the acronym ROM implies ("Read-Only Memory"), once data (in the case of cartridge-based consoles, the game itself) has been written to the chip, it's locked into a read-only state (i.e. you won't be able to write anything onto the cartridge.)