I have a JAP 37000L and it works FLAWLESS with it and my BB Navi hdd. Chip is ****ing great. Make sure you wire it up RIGHT. Don't connnect G point. Just connect H and I. I am almost willing to bet that might be your problem. Also check all the bios points and for god sake take that piece of shit *** out of there. That thing will cause far more headaches and is no surprise it doesn't work.
JAP 60GB PS3 (release date)
37000 L V7 Ocean Blue Matrix Infinity BB Navi (.32)
30001-R V4R Magic ICE 91f3+ PS2 Linux (2.4.1)
10000 V0 No Mod, PSP-1000 1.0 FW 100K release model
PS2 Linux Kit (BB Navigator Installed)
Scph-5501 Stealth, All Sega Systems
Cube with Save, Xbox 1.0 Modded