as the title says.
My sister has an old 3DS where my 3DS is 11.3
I know it's not possible to downgrade a 3DS on 11.3 but they didn't specify installing a firmware from another 3DS.
Also if i sound like an idiot that is because i am an idiot so don't call me one please, i already know.
It was easy to bypass some of the restrictions, as one of the admins left a registry key in the administrative shares drive, which allowed me to get around the blocking of some sites.