How install Hatsune Miku Project Diva -Dreamy Theater Extend- NPJB00201?

I managed to get Dream Theater 2nd working. Saves from PPSSPP don't seem to work so you need to rip a save from an actual psp or find one.

Save locations are located at: RPCS3\dev_hdd0\home\00000001\savedata\(insert game serial code)

Overwrite the PARAM.SFO and SYSTEM.DAT with the PSP ones. Worked for me. Good luck!

Then,  i just need the save files from a psp?

Sorry for the late reply, yes you need the save files. Google some save files and you should be golden! Also remember this game uses X for menus instead of the usual O for NTSC J games.