Only drawback at this point is that you have to manually edit and fix your registry using some other tools we made. Hopefully I can get the source that Skylark used to do it all on the PSP so this step isn't necessary. But it does work; I've got a custom font on my 2.80 right now

Also, like the original registry-based font hack, there's absolutely no chance of bricking with this, since it never touches flash0 - only flash1.

The readme in the ZIP file should tell you everything you need to know. If not, feel free to ask!