Some old downloads were padded with null bytes to increase file size (fake rips). A genuine scph39001.bin is exactly . Any variation in size usually indicates a bad dump.
Exactly the same file. No conversion needed. Copy the same BIN to your phone’s aetherSX2/bios folder. scph39001bin file new
Whether you dump it yourself from a garage sale PS2 or carefully verify a download against public hashes, treat that 4MB scph39001.bin as what it is: a rare, immutable piece of gaming history. Guard its integrity, keep backups, and enjoy the best emulation has to offer. Some old downloads were padded with null bytes
: If the emulator boots to a black screen, double-check that you have selected the correct BIOS for the region of the game you are trying to play (e.g., use the 39001 BIOS for NTSC-U games). dump the BIOS from your own physical PS2 using a tool like FreeMcBoot? Retro Game BIOS Files - What are they? Where? Which ones? Exactly the same file
Assuming you have obtained a clean, verified file:
Rename the file to scph39001.bin exactly (lowercase). Some older emulators expect it case-sensitive.
Typically a 4MB .bin file, often accompanied by additional files like .rom1 , .rom2 , and .erom . Performance & Compatibility Review