NefMoto > Technical > Reverse Engineering > How to read the 32K CPU ECU ROM from 0000 to 7FFF on ME7
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Author Topic: How to read the 32K CPU ECU ROM from 0000 to 7FFF on ME7  (Read 8802 times)
RS4boost
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« on: May 22, 2012, 01:15:43 PM »
Hi,
 
I have disassembled my original RS4 8D0907551K flash with IDA at hex 8000000, but I only have the posted 32Kb CPU ROM from the 551M ECU.
It is naturaly logical that some jumps between flash and CPU ROM, do not match.

Has anybody already read out the original RS4 8D0 907 551K CPU ROM, or know how I can read it out from my ECU?

Thanks

Tom
« Last Edit: May 22, 2012, 02:32:36 PM by RS4boost » Logged
gremlin
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« Reply #1 on: May 22, 2012, 04:06:34 PM »
Quote from: RS4boost on May 22, 2012, 01:15:43 PM
Has anybody already read out the original RS4 8D0 907 551K CPU ROM,

NP. I've read it 10 years ago...
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RS4boost
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« Reply #2 on: May 23, 2012, 09:38:58 AM »
Thanks a lot for sharing this... Smiley

Tom
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RS4boost
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« Reply #3 on: May 23, 2012, 01:06:10 PM »
Hello Gremlin,

After a compare I wonder that your posted 551K file is identical to the 551M File.  Huh

How can it be?

Is the 551M Hard- and Software so close to the 551K, that the CPU ROM is identical?
 
Thanks

Tom
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Zac
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« Reply #4 on: May 25, 2012, 03:39:43 PM »
It can be read w/ Minimon in boot mode. Use the config Tony posted up here: http://nefariousmotorsports.com/forum/index.php?topic=1268.msg12062#msg12062
« Last Edit: May 25, 2012, 03:45:32 PM by Zac » Logged
setzi62
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« Reply #5 on: May 28, 2012, 02:06:18 PM »
Quote from: RS4boost on May 23, 2012, 01:06:10 PM
Hello Gremlin,

After a compare I wonder that your posted 551K file is identical to the 551M File.  Huh

How can it be?

Is the 551M Hard- and Software so close to the 551K, that the CPU ROM is identical?
 
Thanks

Tom

There is only limited number of different CPU ROM's used, so K and M box are identical and the applications
use the same entry points. This CPU ROM version is used also on many ME7.5 ecus.
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RS4boost
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« Reply #6 on: May 28, 2012, 03:06:40 PM »
Thanks for this info... Wink

Tom
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ported2flow
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« Reply #7 on: July 04, 2012, 04:39:11 PM »
is the cpu content also in the flashrom content ?? i have read an 32k file and it fits in my flashrom or did i read it wrong?
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rkam
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« Reply #8 on: July 11, 2012, 03:43:43 AM »
Quote from: ported2flow on July 04, 2012, 04:39:11 PM
is the cpu content also in the flashrom content ?? i have read an 32k file and it fits in my flashrom or did i read it wrong?

If you read your flash with minimon from 0000 to FFFFF (1024kB) then you most likely got some CPU rom (0000-FFFF), maybe some other stuff, then FLASH the rest. Your FLASH file would then be wrong.

To get FLASH-only you need to read from 8000000 or 100000 or something like that.
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