When searching for "PS Vita BIOS," users are typically looking for the system firmware files required to run PS Vita games on emulators like
If your physical PS Vita is stuck on a black screen (bricked), you may need to reflash the raw BIOS using a hardware flasher (Teensy 2.0, Raspberry Pi Pico). This is advanced; do not attempt unless your Vita shows zero signs of life (no green LED).