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Author Topic: Cannot read Flash, Security access denied due to invalid key ?  (Read 1685 times)
RC200
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« on: February 25, 2020, 08:28:27 AM »

What's wrong ? What does it mean ?

I just wanted to read the Flash. I first attempted 29F400 and then 29F800BB (didn't remember the right size).

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EURO S4 B5 2.7T 07/1999 Ph2 8D50J9
VIN: > 8DZYA00xxxx
ECU 8D0 907 551D
K04, 750cc, Walbro 485LPH fuel pump, 4bars FPR, MRC map
Running 100% E85 with UniSettings adjustment. Timing +7.5°. >350 rwhp.
13.5L/100kms on highway, 16-19 mix driving.
nyet
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« Reply #1 on: February 25, 2020, 09:48:05 AM »

Not stock or immo

Please don't post cellphone pics. Post screen captures or copy/paste text from the log
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ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

Please do not ask me for tunes. I'm here to help people make their own.

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RC200
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« Reply #2 on: February 25, 2020, 10:06:27 AM »

Not stock or immo


So, what is the counter measure ?
I probably have Immo2 (euro S4).
Not stock for sure (MRC tune from previous owner).

So, non-stock ECUs cannot be read ?
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----------------------------------------------------------
EURO S4 B5 2.7T 07/1999 Ph2 8D50J9
VIN: > 8DZYA00xxxx
ECU 8D0 907 551D
K04, 750cc, Walbro 485LPH fuel pump, 4bars FPR, MRC map
Running 100% E85 with UniSettings adjustment. Timing +7.5°. >350 rwhp.
13.5L/100kms on highway, 16-19 mix driving.
d3irb
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« Reply #3 on: February 25, 2020, 10:35:16 AM »

Touching non-stock ECUs with tools is dangerous, especially dangerous outside of bootmode. You have no idea what the tuner patched in over the normal read/write routines - you're lucky they seem to have adjusted the seed/key rather than something worse. If you are interested in making your own tune, verify that the hardware is stock and flash to a stock BIN via boot mode, then start over.
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nyet
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« Reply #4 on: February 25, 2020, 10:37:11 AM »

Your sig says "MRC map"

What does this mean?
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ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
RC200
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« Reply #5 on: February 25, 2020, 10:40:45 AM »

Your sig says "MRC map"

What does this mean?

In Europe, MRC is a tuner.
http://www.mrctuning.com/

My car has been "adapted" to K04, 750cc and probably boost by the previous owner.
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----------------------------------------------------------
EURO S4 B5 2.7T 07/1999 Ph2 8D50J9
VIN: > 8DZYA00xxxx
ECU 8D0 907 551D
K04, 750cc, Walbro 485LPH fuel pump, 4bars FPR, MRC map
Running 100% E85 with UniSettings adjustment. Timing +7.5°. >350 rwhp.
13.5L/100kms on highway, 16-19 mix driving.
nyet
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« Reply #6 on: February 25, 2020, 11:10:38 AM »

In Europe, MRC is a tuner.
http://www.mrctuning.com/

My car has been "adapted" to K04, 750cc and probably boost by the previous owner.

I know who MRC is Smiley

You're going to want to rethink whatever it is you are trying to do.
Logged

ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
RC200
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« Reply #7 on: February 26, 2020, 06:24:27 AM »

Quote from: nyet
You're going to want to rethink whatever it is you are trying to do.

!?
I have free engineering time and I could enhance my E85 fueling more accurately.
Maybe the best way is to purchase a H or M box and to start from scratch and working on the bench, disabling Immo first (I mean from a stock bin).
« Last Edit: February 26, 2020, 06:26:09 AM by RC200 » Logged

----------------------------------------------------------
EURO S4 B5 2.7T 07/1999 Ph2 8D50J9
VIN: > 8DZYA00xxxx
ECU 8D0 907 551D
K04, 750cc, Walbro 485LPH fuel pump, 4bars FPR, MRC map
Running 100% E85 with UniSettings adjustment. Timing +7.5°. >350 rwhp.
13.5L/100kms on highway, 16-19 mix driving.
nyet
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Karma: +477/-75
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« Reply #8 on: February 26, 2020, 10:16:01 AM »

!?
I have free engineering time and I could enhance my E85 fueling more accurately.
Maybe the best way is to purchase a H or M box and to start from scratch and working on the bench, disabling Immo first (I mean from a stock bin).

Correct. Also IMMO disable isn't required if you just have it working properly.
Logged

ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
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