How exactly are you going to have a new FC soon? If you discovered a method to change it, I'd love to hear it. Hate the fact that my FC starts with "0920" (Hate zeros as the first or last number of the initial part of the FC)
One of the sites that weren't blocked on the school's network was some file uploading sites. I would upload some games, write down the URL and take it to school one day.
my school has a chrome extension called light speed filter agent and it legit blocks YouTube pfps since the file cdn(I think aka yt3.ggpht.com) is classed as mature
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.
Anyways, you can do change the FC without formatting with GodMode9.
In CTRNAND > data > sysdata > 000010032 > erase 000000000