Angry Video Game Nerd Adventures, 3D Thunder Blade, Steamworld Dig, Samurai Defender, and Mario vs Donkey Kong: Tipping Stars, are games that force you to update to 9.0.0U if you're running a firmware under 9.0.0U so what I was thinking was if I could spoof the 3ds into thinking it's running a lower firmware then 9.0.0U when it tries to boot one of these games it'll prompt you to "update" and it would downgrade your firmware to 9.0.0U so I was wondering if I could maybe get a romfs of a home menu that is from a 3ds that is running a firmware under 9.0.0U to trick the 3ds into thinking it running a earlier firmware. I'm hoping I can use this to downgrade people's 3ds' firmware to make the 3ds compatible with things like Ninjhax 1.0 and Gateway 3DS. If the romfs of the home menu could be decrypted in advance that would be amazing!! This is just an idea I have no clue if it'll work!