| Problem | Solution | | :--- | :--- | | | Your Custom Firmware is too old. Update to PRO-C2 or LME 2.3. | | Black screen after Capcom logo | Your CSO is corrupted. You likely downloaded an "old" ZIP. Find a 2026 repack . | | No sound in cutscenes | Go to Recovery Menu → Advanced → Force Audio Recovery to ON. | | File is a ZIP, not CSO | You forgot to extract it. Use 7-Zip. Do not rename .zip to .cso – it will brick the launch. |
While there is no official version of for the PSP , various fan-made projects and unofficial ports (often shared as ISO or CSO files) aim to bring the experience to the handheld . Key Features of "Resident Evil 4 PSP" (Unofficial) resident evil 4 psp iso csozip new