EEC-V 512KB Read/write, J3 support?

[DWS]

So in a batch of "bad" computers, I received around 4-5 of these EEC-V 512KB computers. They are all for Mazda models around 00-03 and comes up from Ford as a 512kb dump size. Flash chip on board is AB28F400 which is 4mbit (512KB). The rest of the hardware looks more or less like a normal EEC-V so I suspect it's still Intel 8065 based.

Calibration files from Ford can be gotten, I know the flash chip can be read/wrote directly, but was wondering if anything supports reading/writing via OBD2 or J3 port?

I've tried PCM Flash, but it seems like none of the options identifies correctly or communicates as expected. I have a Burn2 with J3 adapter, but reading the lower 256kb just gives FC and EC over and over so I assume the communication standard or pinout changed on them.

Before I get super deep into them, I figured I'd check with the community to see if anything exists already (why reinvent the wheel).

The exact computer I poked at was
Catch Code: UID2
Part number: 2ALU-AC
Hardware number: MLM-B02

Has the typical 104 pin connector, but I didn't check if it's PWM or Canbus so that might be part of the issue (like a D186).

Just for reference, the ~30 computers I got, I was able to read effectively all of them that PCM Flash supports (4 bank 216kb), 3 didn't work, and was able to read 2 of the 3 via J3 port. The last one has a major short on the board (12v side) and the EEPROM data coming back appears corrupt.