The Sony system software license agreement restricts use of the firmware to "personal, non-commercial use on the PS3 system". Using it with an emulator exists in a legal gray area, but downloading it directly from Sony (rather than distributing it yourself) is the safest approach.
As he launched the emulator, Alex held his breath. The app loaded slowly, and then, to his delight, the PS3 emulator dashboard appeared on his screen. He navigated to the game's section, selected his favorite childhood game, "Uncharted 2: Among Thieves," and waited for it to load. Ps3 Emulator Bios File Download BETTER For Android