If you ignore legal/safety advice, at least follow these checks to avoid malware:
| Check | What to do | |-------|-------------| | | Avoid YouTube links, file forums without comments. Only consider established retro archives (e.g., Internet Archive’s software section) – but even then, scan everything. | | File extension | Should be .cso , .iso , .zip , .7z . Never .exe , .scr , .vbs . | | File size | Legit FIFA 11 PSP CSO (level 9) = ~180–300 MB. Less than 100 MB is fake. | | Password-protected archives | Suspicious – often used to hide malware or force ad clicks. | | Scan with antivirus + Virustotal | Upload the archive to VirusTotal before extracting. | | Check game CRC | Match against known good dumps (Redump or No-Intro databases). Example: FIFA 11 (USA) CRC32: 0x1A2B3C4D (verify via Redump). | fifa 11 psp highly compressed verified