The key phrase in your search is "work." Many highly compressed files found online are corrupted, resulting in a "black screen" on startup or crashing during loading. To ensure the file works, you need the correct setup:
For Android (PPSSPP Emulator):
For PC (PPSSPP or JPCSP):
When you see a file labelled “Naruto Shippuden Ultimate Ninja Heroes 3 PSP highly compressed work,” it usually means the file has been run through algorithms like CSO (Compressed ISO) or archived via 7-Zip at Ultra compression. The key phrase in your search is "work
Here is the honest truth about how these files work: For PC (PPSSPP or JPCSP): When you see
Does it work? Yes. A genuine highly compressed CSO file (usually 300MB – 500MB) will work flawlessly on custom firmware (CFW) PSPs and emulators. Does it work
Because you are using a compressed file, you may encounter bugs that do not exist in the original version.