[OpenIndiana-discuss] Only one SSD detected on expander

[Robin Axelsson]

The worst case would be if the firmware image is signed and encrypted, 
which I doubt. There is a workaround for that too if that would be the 
case anyway.  I'm not sure whether those firmware images have a real 
file system (such as yaffs for Android devices) or are just a solid 
binary file.

Here are a few pages that I found:

http://hexblog.com/files/recon%202010%20Skochinsky.pdf

http://sviehb.wordpress.com/2011/09/06/reverse-engineering-an-obfuscated-firmware-image-e01-unpacking/

http://www.nslu2-linux.org/wiki/HowTo/RecoverFromABadFlashUsingJTAG



On 2012-10-19 14:11, James C. McPherson wrote:
> On 19/10/12 09:29 PM, Udo Grabowski (IMK) wrote:
>> On 19/10/2012 11:48, Robin Axelsson wrote:
>>> Isn't it possible to somehow make the drive dump the firmware 
>>> somehow, edit it
>>> with a HEX editor (and recalculate firmware checksums) and flash the 
>>> modified
>>> .bin file back to the drive? I guess that the WWN must be found in 
>>> the firmware
>>> somewhere.
>>>
>>
>> Usually, you can read and write drive firmware with fwflash.
>
> You should be able to write new firmware, sure - my colleagues
> did add support for flashing sd(7d) to fwflash. I would be very,
> very wary of doing so, however, unless you have documentation
> from your disk manufacturer which (1) gives you the structure and
> instructions definitions, and (2) lets you verify that you have
> a valid image.
>
> Reading firmware from the disk is not supported with fwflash.
> http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/fwflash/plugins/transport/common/sd.c#125 
>
>
>
> James C. McPherson
> -- 
> Solaris kernel software engineer, system admin and troubleshooter
>               http://www.jmcpdotcom.com/blog
> Find me on LinkedIn @ http://www.linkedin.com/in/jamescmcpherson
>
>
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