Most of this research was done by wwwwwwzx in 2018: https://x.com/wwwwwwzx/status/979949167224045568
Since most of this was already done, I used the XY radar as an introduction to debugging 3DS games. I won't be providing much info on how to play the game because I literally haven't done anything in-game besides look at the Poké Radar the moment my cartridge arrived. Huge thanks to SirToastyToes for helping me understand this part of the game!
I was able to solve the unknown condition that causes 4% upbeat music rate--it's the player's birthday!
We found some methods to force it to be your birthday ingame:
- The birth date that matters is in the 3DS bio, not the one attached to the NNID. You can change this birth date without penalty.