[flashrom] Flash special target

[Michael Matz]

Dear Mr. Stefan Tauner,
thank you for the quick response. Yes, you are right it is a nand flashrom.
Is the command set so different to the other type? Sorry for the 
question, but
I have never use that stuff before. Also I have had not the time to read 
all documents about it.

Anyway thank you to you and have a good time.
Also many greetings to Östereich  from Thailand.
Sincerely

Mike

P.S.: Ich bin ein auswandere aus Deutschland.

Stefan Tauner schrieb:
> On Sat, 25 Jan 2014 21:15:43 +0700
> Michael Matz <mike at gsshm.com> wrote:
>
>> Dear team,
>> may you can help me for to fix some problem.
>> I'm working in a company and we repair and produce for a well known
>> costumer.
>> Normally we upload the test firmware (Linux) to the device by Ethernet,
>> with  an encrypted Windows machine controlled from the customer.
>> The tester show only not useful error, like DUT load stub.
>> I work in the department for recover and repair ( Customer return ).
>> Unfortunately the company is not willing to pay for professional tools.
>> So may colleges (asian) they scrap the units, but my boss (Asian) complain.
>> Now too the situation, I have a few units with firmware (Linux) and
>> fortunately the have had a problem with the Ethernet so the tester is
>> not able to delete the flash.
>> I can use it for to debug the unit with the Bus pirate at UART mode.
>> So I want to read this flash rom's and reprogramme the others to debug them.
>>
>> It is not clear the MCU is complete working or not, may some pins have a
>> micro crack.
>> How ever I have no SPI port on it, I have an JTAG an a Serial port.
>> The flash it is a 1 to 4 MB TQFP with 48 pin. Exchanging the chip was
>> already working for me, but as you know it is difficult and dangerous to
>> solder on a 6 layer PCB.
>> Of course I have all information about the chips, schematic and layout.
>> I believe, I can use the serial port with bit-bang. But I have had no
>> success (I read it one time on a other schematic).
>> I'm the only one in the company use and have experience with Linux.
>> So, if you have some time and willing to help, it will be great. As pay
>> back I can give you the information with what parallel flash it is
>> working (ICP).
>> The only things, are not allowed for me is: to tell the customer name,
>> share schematics, his product or firmware or CPU they use.
>> But I can say it is a MIPS based MCU.
>> Thank you in advance for any answer or help you can give to me.
> Hi Mike,
>
> first of all we need to know which flash chip is used. If it is nand
> flash then flashrom will be of no help and other communities might be a
> better place to approach (e.g. communities focusing on wifi routers,
> setop boxes or smartphones).
>