That's one reason I offered to send the original PSBBN 0.20 discs to you. The other is that if I had local access to a DVD burner to make a copy of it I already would have.
Things do look a bit on the bright side for Asian PS2s supporting the HDD, and even possibly that US games still have HDD support intact but it's just hidden better. My Asian version of Dark Chronicle has HDD support in it. I just installed it to my HDD last night.
My PlayStation2 HDD guide.
NTSC J SCPH 30000 with HDD and PSBBN 0.32
NTSC U/C SCPH 30001R Astral Blue LE PS2
Final Fantasy XI status:
Server - Ragnarok, Race - Mithra, Jobs - BLM 72 WHM 51 SCH 39 SMN 25, Nationality - Windurst, Name - Bungiefan