KOFXI hack that enable all hidden characters?

[GumGum]

i am wondering is there are any hack on AW KOFXI that enable all the hidden characters so that i dont have to wait 1440 hours to see these hidden characters enabled? @MetalliC

 

[nem]

There is, but it seems to be inaccessible with unmodified cartridges:

https://sudden-desu.net/entry/king-of-fighters-xi-time-release-menu