Other MacPro SPI flash compatible chips

[MacintoshKeyboardHacking]

I suspect this "list" is essentially "unlimited", but I wanted to share my experience.

I corrupted the flash on my cMP 5,1. For technical reasons, it cannot be reprogrammed in circuit. I didn't want to ever be in this situation again, so I used some dupont wires to connect to a cheap Amazon SPI module (10 for $11) that could be easily swapped. I didn't know for certain the flash chip Winbond W25Q32 would be compatible, but I programmed the module with a RaspberryPi, plugged it in, and immediately got a chime!

Macschrauber's Rom Dump won't talk to it, but the module is easy to disconnect and reprogram offline. Food for thought...
MX25L3205D
MX25L3206E
SST25V032B
W25Q32*

Syncretic identified these JEDEC ID in the code
Eon M25P32 *
Atmel 45DB321 *
ST Micro M25P32 *
Spansion MBM29DL32TF *


*=may not be supported by 3rd party tools

 

[TheShortTimer]

Nice work!

Thanks for sharing this info with us. The 5,1 is now back to normal?

 

[MacintoshKeyboardHacking]

Just finished my 2nd box (both with bad SPI). NVRAM is saving just fine under 10.6 and 10.15, and otherwise no issues. The 2nd one turned out a little cleaner.

 

[MacintoshKeyboardHacking]

EDIT: these are the modules I purchased

NOYITO W25Q32 W25Q64 W25Q128 Flash Memory Module Data Flash SPI Interface (Pack of 5) (W25Q32)

Product Parameters: This module uses serial Nor flash external memory expansion chip W25Q32 / W25Q64 / W25Q128. W25Q32: 32M-bit / 4M-byte W25Q64 : 64M-bit / 8M-byte. W25Q128: 128M-bit / 16M-byte. Supports SPI interface. Clock frequency: ≤104MHz. Working voltage: 2.7-3.6V. Size: 14mm × 15mm x 2mm ...

www.amazon.com