Netgear CMD31T - any hope?

[theinfiniti]

Now as for flashing through less conventional methods, namely using an arduino or just a serial port - does such a possibility exist?

It has a 4 pin 3.3V serial header soldered onto it. You can try flashing it through the bootloader console by TFTP transferring the firmware. If you need additional instructions and can't find it, let me know and I'll try going through the process to document it.

I would be super grateful. I just don't have anything more than $20 to invest in the process and will likely not be repeating this until I absolutely need another modem. It is also the reason I bought this netgear in the first place as any new Motorola modem is a good $20 extra if not more.

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When I cannot get the SPI to detect with 3.3v, I've tried 3.v (basically connecting 2 AA batteries to power it), if I can't get a consistent read then I go up to 5v.

I did read something about someone putting together an arduino based spi reader/programmer but they're nowhere near as fast as using a Blackcat/Flashcat or an JTAG NT to read and write back. Alternatively, if you already have one of those random Atmega32U2 boards with all the gpio points on it, you could flash the Blackcat/Flashcat spi hex on it and use that instead.

For clips, I suggest you get the pomona 5252. I've went through several of the 3m clips and found the pomona to have a softer spring on it and the wider base make sit easier to open and close the clip without the risk of bending the pins on it.

Here's the link for the clip: http://www.newark.com/pomona/5252/test-c...=soic+5252

I have one for every one of my programmers.

Thanks for the advice will look into Blackcat/Flashcat. No room in my budget for clips. A pair of spliced ide connectors and some solder will have to do.

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I bet its a Spansion S25FL064PIF flash chip, but that's just guessing off the part number you gave.

I've never seen an Ardiuno based eeprom programmer, it's possible I just don't think anyone's ever wrote one for our purpose, plus you would need more than 9600buad serial to do it in any reasonable amount of time... dumping 8MB of flash @ 9600buad would take 2 hours, even 115200 buad would take 10 minuets or so and I'm not even sure of the clocks are fast enough to read/write a SPI flash chip @ that speed on an Ardiuno. The closest thing I know of is the FlashcatUSB that uses the Atmega32U2

Time is not an issue. Definitely willing to wait 30 minutes for the chip to be flashed or dumped. The part number sounds right, I looked at the part description for it and took out my multimeter to test and everything matches.