PS2 - FunTuna (Free McBoot for Fortuna), Page 6

You have to copy it via Homebrew it seems.

Free Mcboot Funtuna + Memory Card 64mb + Opl Para Ps2 Slim

New PS2 Free McBoot Card FMCB v1.966 8M 16M 32M 64MB Memory Card Supports All Consoles Fat and Slim Update OPL1.2.0 For MX4SIO - AliExpress

FunTuna - FMCB for Fortuna Tutorial (English, 2020)

PS2 - FunTuna (Free McBoot for Fortuna)

Jual Mc Boot PS2/ memory card PS2 - MC tanpa boot - Jakarta Barat - A*l

PS2 - FunTuna (Free McBoot for Fortuna)

PS2 - Difference FMCB 1.966 vs 1.953 ?, Page 2

How to Play Games via USB on PS2 using Free Mcboot

PS2 - FORTUNA Homebrew Launcher by VTSTech (BOOT.ELF replacement)