No DMZ and UPNP , is it possible?

[nc50lc]

First of all, AdHoc is not yet fully supported by PPSSPP.

If you want to connect to Coldbird Prometheus server, you still need DMZ enabled router to connect.
Even if you successfully connected to the Online Guildhall, it is still a bit "tricky" to start a quest with random players. It is recommended to play only with players that you have a contact (check other threads)

If your router doesn't support DMZ,
I recommend using stable 3g/4g data if youre using an Android device.
I Successfully started a quest with a random person using 3g + 25% trick. ofc, it's not gonna work everytime, especially with real psp players.

-there's a lot of people here using Hamachi, but Android devices wasn't supported yet. (Hamachi-beta)
-It is simply simulation on LAN, not a server.