Monster Hunter Freedom Unite (MHFU)

[Asferot]

Lets start with things you should NOT do.
Do not look for adhocserver, because it is integrated into PPSSPP itself now.
Do not use alternate speeds.

Now things TO DO.
Do disable fast memory in settings.

Also, here is a good tutorial on connectivity. It is for Phantasy star, but the settings still are the same.
https://sites.google.com/site/psp2iguide/playing-online