Scph5502.bin (EU) (sha1 sum: f6bc2d1f5eb6593de7d089c425ac681d6fffd3f0) … for me, this file was SCPH5552.bin, and had to be renamed.Īfter renaming these BIOS images, it was possible to drag them into OpenEmu and have them be recognized as PS1 BIOS ROM image files. It turns out the filenames were also important, and that I had to rename the files I had to be the expected filenames: But, after I found a set of BIOS ROM images online, adding them this way still didn’t work. Searching around, I learned that you add the BIOS file(s) by dragging and dropping the *.bin files (BIOS ROM images) like you would a game ROM.