Legal reasons. Distributing copyrighted BIOS files is illegal. EmuDeck cannot and will never include them.
sudo chown -R deck:deck /home/deck/Emulation/bios/ sudo chmod -R 644 /home/deck/Emulation/bios/* Check if PCSX2 Flatpak can see the BIOS folder: emudeck ps2 bios not detected
That is a different issue – likely game compatibility, graphics settings, or missing libraries. The "BIOS not detected" error is specifically about initial recognition. Legal reasons
If you see root:root or -rw------- , fix with: LRPS2 (Libretro PCSX2) uses the same BIOS files
Yes. LRPS2 (Libretro PCSX2) uses the same BIOS files. Place them in /home/deck/Emulation/bios/ and configure the core to look there. Conclusion: Patience and Precision Win The "EmuDeck PS2 BIOS not detected" error is almost never a bug in EmuDeck or PCSX2. It is nearly always a user-side issue: wrong folder, compressed files, incomplete set, or permissions. By systematically working through the steps above—verifying the BIOS path, extracting archives, checking file completeness, resetting configuration, and fixing permissions—you will resolve the issue.
/home/deck/.var/app/net.pcsx2.PCSX2/config/PCSX2/inis/PCSX2.ini (Path varies by install method)
/home/deck/Emulation/bios/ If it points elsewhere (e.g., ~/Documents/PCSX2/bios/ ), click "Browse" and manually set it to EmuDeck’s BIOS folder. Then click "Refresh BIOS List". If BIOS appear, the problem is solved.