Doesn’t recovery mode just factory reset the device? I know that there is nothing like that on IOS but I could see that on Android. It would make sense on Android because you are allowed a lot more customization when it comes to the firmware and what you are allowed to run on it.Not specifically consoles, but all sorts of mobile phones. It's called a recovery mode, and that would never have been discovered if the 3DS wasn't already completely cracked open.
Edit: Actually, the PS3 does have such a feature as well. Won't save it from most bricks, but it exists.
Does the ps3 boot any disk without security checks?