Between roughly 2018 and 2022, a specific URL was passed around Reddit forums, YouTube tutorials, and Discord servers: archive.org/details/ps2biospack (or variations like ps2_bios_collection).
This package typically contained:
Why was this link so famous?
This is why your search results are likely broken. The cycle looks like this:
This cycle repeats endlessly. There is no permanent, stable link for PS2 BIOS files on the Internet Archive because it is legally volatile. It is a game of cat and mouse that the archivists usually lose. internet archive playstation 2 bios link
The Internet Archive (Archive.org) is a non-profit digital library offering free public access to a vast repository of materials: websites (via the Wayback Machine), books, software, music, and video games. Because it operates as a library and has an explicit mission to preserve digital culture, it has historically taken a more lenient stance on "abandonware" than commercial hosting sites.
For years, a specific, search-engine-optimized page on the Internet Archive became the holy grail for emulator users: A collection packaged neatly as a "PS2 BIOS pack." Between roughly 2018 and 2022, a specific URL
Use a real PS2, a USB drive, and a homebrew app called "BIOS Dumper" (via FreeMcBoot). This gives you a 100% legal, perfect copy.