where it saves, firmware for M2675F?

[curiosu99]

hello.

 I have the printer! M2675F v21.
I bought the fixed firmware, I reset, but I can not find where it saves the firmware reset. The only memory I found serial number and Crum is 24512WP!
does anyone know?
nand memory to be on the back of the motherboard?

[curiosu99]

M2675 motherboard

[вложение удалено администратором]

[apopovv]

Yes. Reset firmware in nand flash.

[curiosu99]

This is NAND (from picture) ?

[вложение удалено администратором]

[apopovv]

The board has another NAND chip?

[curiosu99]

I just want to make sure.

2.
another problem. after I extract the firmware on external programmer can be modify  to be loaded into the printer without programmer (USB only).
You know where to change?  (0-77 ? )

thank you

[apopovv]

Study the datasheet for NAND.
This chip has a complex structure. Nonlinear. Includes additional information for error correction and compensation of bad blocks.

By simply adding a boot header can not get the firmware to flash over USB.

And no ask me - "HOW ?" I don't know.

[curiosu99]

you have a solution for M2870 v 18  !
I think
how can be modify 24c512 to be loaded in the printer, on  USB cable
without opening the printer (and without   disconnecting the cable Crum,     just Chip cover)

you know what I mean?

[apopovv]

For change CRUM in EEPROM without open printer you need install Cartridge with this CRUM

[apopovv]

Can you get me DUMP from NAND ?
I try to build FW for USB loading.

[curiosu99]

For change CRUM in EEPROM without open printer you need install Cartridge with this CRUM

Crum and serial number  can be changed from 24512wp dump.
but my problem is :
 - i extract 24512wp dump      but how can be reload( dump with crum and SN changed)  on usb

(serial number on 24512wp can be found  - 00000110  ,   00000e30     , 0000f144
crum : 00000900    , 00000c00  )

[apopovv]

It is impossible.