Thunder rolled. Rain tapped at the window like a metronome. Jo guided Rei-3 higher, thumb precise despite the shaking, because the hands knew the path. At the top, the avatar reached a glass capsule containing a single object: a battered PSP faceplate, identical to Jo’s own. When Rei-3 lifted it, the voice softened to something almost human. “What you repair of yourself repairs the world.”

If a patch or "texture replacement" pack is released, it is typically applied using PPSSPP (the leading PSP emulator) by placing replacement files in the emulator's TEXTURES folder. Evangelion Jo QuickBMS Script - EvaGeeks.org Forum

Black screen after Ramiel cutscene.