OFW could also be updated offline, directly from a game card, IIRC. Like, some games have a minimum FW version requirement and the FW update comes in the same cartridge... right? Never updated that way myself, so I'm not that sure.nintendo can probably tell that you're suddenly on a higher firmware version despite not downloading and installing it from their servers
Then again, they could probably tell whether an update was installed that way that or not, as well.











