You do not need a hacked PS3 to get these files. Sony provides the firmware updates for free on their website.
RPCS3 looks for a specific file called EBOOT.BIN within a game’s folder. How to download and install PS3 Firmware for RPCS3 Rpcs3 Bios File Fix
This distinction is vital because simply dropping a random file named "bios.bin" into a folder will not work. RPCS3 requires the official Sony PS3 System Software files to emulate the underlying operating system of the console. These files handle the decryption of games, the user interface, memory management, and controller inputs. You do not need a hacked PS3 to get these files
The PS3 Firmware contains hundreds of individual files that are normally stored on the console’s internal flash memory and hard drive. For an emulator, these files serve three primary purposes: How to download and install PS3 Firmware for
So, when people search for an "RPCS3 BIOS file fix," they are usually experiencing one of three specific, fixable errors. This article will walk you through exactly what those errors mean, why standard PS3 BIOS files don't work, and how to apply the correct fix to get your games running.
If you are searching for a "BIOS file fix" for RPCS3, you are likely coming from the world of PlayStation 2 (PCSX2) or original Xbox emulators.