That MC has a "Datel style" construction as it has a "Gate crasher" chip and a microcontroller (in the epoxi blob)
I think you should "short" the data lines on the NAND chip (look for the pinout of the Wii or 360 nand, the pinout is identical) and insert the memory card on the PS2 with it shorted. Once you select the memory card the PS2 will say it's unformatted and will offer to format it. Remove the short and hit yes.
Make the short with the tip of a small screwdriver.
SCPH-10000_GH-001 SCPH-15000_GH-003 SCPH-18000_GH-008 SCPH-30001_GH-005 SCPH-30000_GH-016(V4) SCPH-30001_GH-010(V4)
2xSCPH-10190, 2xSCPH-10350, 2xSCPH-10280
"**** j0 hackers!"
-Sjeep (As seen on TOXIC OS ELF...)