WOW Villain you are the SCPH-1X000 knowledge god!
I've just checked mine, its a 10000, sn J07 and manufactured in S Minokamo. I can install both 1.00 and 1.10 DVD drive, however one of them (i can't remember which one) also created BIDATA-SYSTEM folder and files, is this normal? I had a bit of trouble installing the latest FreeMCBOOT, I had to use a earlier veriosn (1.53 if memory serves)
Edit - I found my PS2 ident dump info:
Log file generated by Playstation 2 Ident v0.835, built on Jan 25 2020 09:31:31
ROMVER: 0100JC20000117
ROM region sizes:
ROM0: 0xBFC00000 (3367651 bytes)
ROM1: <Not detected>
ROM2: <Not detected>
EROM: <Not detected>
ROM chip sizes:
Boot ROM: 0x1FC00000 (32 Mbit) CRC16: 0x6ba5
DVD ROM: <Not detected>
DVD Player: -
PS1DRV: 1.01
EE:
Implementation: 0x2e
Revision: 1.4 (CXD9542GB)
EE_F520: 0x00001201
EE_F540: 0x00001201
EE_F550: 0x00000000
FPU implementation: 0x2e
FPU revision: 1.2
ICache size: 0x02 (16 KB)
DCache size: 0x01 (8 KB)
RAM size: 33554432 bytes
IOP:
Revision: 0x0015 (CXD9553GB)
RAM size: 2097152 bytes
SSBUS I/F revision: 2.0 (CXD9566R)
AIF revision: <Not detected>
Mainboard:
Model name: SCPH-10000
Mainboard model: GH-001
Chassis: A-chassis
ROMGEN: 0117-2000
Machine type: 0x00000000
BoardInf: 0x00 (Not detected)
MPU Board ID: 0xffff
SPU2 revision: 0x06 (CXD2947R)
MECHACON revision: 1.2 (CXP101064-605R)
MagicGate region: 0x00 (Japan)
System type: 0x00 (PlayStation 2)
ADD0x010: 0x0001 (A)
M Renewal Date: ----/--/-- --:--
Model ID: 0x1a0000 (SCPH-10000)
Console Model ID: 0xd201
EMCS ID: 0x00 (Japan)
USB HC revision: 1.0
GS revision: 0.8 (CXD2934GB)
GS ID: 0x55
No expansion device connected
i.Link:
Ports: 2
Max speed: 2 (S400)
Compliance level: 1 (IEEE1394A-2000)
Vendor ID: 0x00a0b8 (LSI Logic)
Product ID: 0x600100