literally the only correct update Nintendo could've released for the 3DS was one which opened up the firmware at least a little more, and/or removed restrictions to playing games (I'm almost sure that there are still cross-region restrictions, and so removing them would be the correct option)
When a device is past its end of its lifecycle like that you don't lock it down more, you give people the tools to still re-use it
You're just making more E-waste otherwise
Literal Jesus fucking Christ