: Place the "Textures" folder inside the PSP/TEXTURES directory on your phone's internal storage .
The downloads you see online for "MKX on PPSSPP" are typically fan-made mods based on an older title, Mortal Kombat Unchained mortal kombat x ppsspp file download for android portable
For pure convenience and offline play, Mortal Kombat: Unchained (via PPSSPP) remains the gold standard. : Place the "Textures" folder inside the PSP/TEXTURES