To ensure your file isn't corrupted, many users check the MD5 checksum. A "clean" dump of the PSP 6.60 BIOS typically has this signature: 5661f34d2aa2d74e44397391a2715cd6 The Legal Aspect
The psxonpsp660.bin file is the PlayStation 1 BIOS extracted from the .
Go to Settings > BIOS Settings and point the directory to the folder containing the file. 3. MD5 Verification
It is a lean, efficient file compared to some of the bulkier dumps from early 90s consoles. How to Use psxonpsp660.bin