PPSSPP is a program, which means it is designed to function without an external BIOS file on Android . Unlike many other emulators (such as those for PS1 or PS2), PPSSPP simulates the PSP's internal operating system and firmware directly within its code. Key Facts about PPSSPP BIOS
Ignore the BIOS. Download PPSSPP from the Google Play Store, load your legally backed-up PSP game ISOs, and start playing. Ppsspp Bios Android