I dont understand how to install Textures its just not working...

[LunaMoo]

Whenever you ask what you did wrong you should provide more info than just what you think is right and wrong, but anyway "new" folder is NOT a correct place to place textures, it's a folder where new textures are dumped. If you got a texture pack that is a pack that someone made, he likely provided some info how to use it or even made it installable zip file which can be drag-dropped or opened by PPSSPP for automatic installation.

The correct path is "memstick/PSP/Textures/GameID" where "memstick" location varies depending on your choice, settings, OS and your OS account priviledges(doesn't have to be in users folder) and "GameID" for your game is the "NPJH50691".