If you are looking for the necessary system files to run an emulator like Vita3K, you should use the official and font packages provided by Sony:
: Downloading .bin or .exe files from unofficial sources claiming to be a "BIOS" can lead to malware infections. Download psvita bios v14 bin
: Emulators often require an additional font package, also available via official update links as a .PUP file. Why "v14 bin" Might Appear Online If you are looking for the necessary system