The only build that works with my Sandisk Ultra SDHC 32GB is OPL CCV2+GRIM.
I've tried from BDM 4.5 and up.
Antoher build just show the USB games on OPL. Even in the latest beta release.
the downside OPL CCV2+GRIM cant save/load in/from the memory card.
PS2 SLim SCPH 90006
Bitfunx mx4sio.