I have a 3ds XL Mario & Luigi dreamteam edition, actually at 6.2.0-12 firmware. I want to know if there's any possibility to upgrade to 9.0, 9.1 or 9.2 firmware to use the gateway as soon as I can
There's any cheaper game that I can use?Unfortunately no. You can however update to 8.1 using a super smash bros cartridge and that will work when gateway releases the update