NefMoto

I was wondering if someone had a good idea of what is stored on the eeprom?

I've found this image which explains some things.

(http://i83.photobucket.com/albums/j318/Cyril279/95050_explained_zpsa3d0abec.png)

It seems like most the bits after 0x130 are adaptations (and maybe DTCs? or are those not stored at all), as clearing codes resets most of the bits.

What I'm most curious about is the 4 bytes starting at 0x112. Does anyone know what they represent?

I have an ECU here, it seems every boot those bytes are different. When I write to it with argdubs tool it fails verification. If i dump the eeprom and do a diff to the last read though, the only bytes not matching are 112 - 116, which seem to be basically random data each read.

I think if I keep booting in bootmode it stays the same, though (so something in normal ECU running keeps writing different values there, I guess)

Any ideas?

Voting for this question too. I'm trying to read 06A 906 032 GR (Bosch code 0 261 207 352) which is also ME7.5 with Galletto 1260 FTDI cable using me7_95040 logger. ECU ID response is the following:

That is ECU for 2.0l gasoline engine (either ADY or ATM) from Seat Alhambra 2003.

I made some experiments and found out that the bytes keep changing if I read EEPROM over OBD. But if I read EEPROM in boot mode it remains the same. I converted HEX data in DEC but I don't see any other system in DEC too. The results of my experiments are in this table:

	1	2	3	4	5	6	7	8	9	10	11	12
	OBD	BOOT	BOOT	OBD	BOOT	BOOT	BOOT	OBD	BOOT	BOOT	OBD	OBD
HEX
0x112	86	24	24	13	AC	AC	AC	FB	B4	B4	33	EB
0x113	6A	1E	1E	25	C8	C8	C8	8B	2B	2B	8D	A6
0x114	BA	A9	A9	8F	45	45	45	39	55	55	1B	2B
0x115	9D	E6	E6	84	E2	E2	E2	3C	A3	A3	45	18
DEC
0x112	134	36	36	19	172	172	172	251	180	180	51	235
0x113	106	30	30	37	200	200	200	139	43	43	141	166
0x114	186	169	169	143	69	69	69	57	85	85	27	43
0x115	157	230	230	132	226	226	226	60	163	163	69	24

Based on my results I think those bytes keep changing only if you read EEPROM over OBD. But that is only my assumption, I may be wrong. I'm playing with this ECU only for the first week :)

Doesn't matter. This is a 4-byte rolling code. It is generated randomly in the ECU program every time the ignition is turned off and on.
In boot mode, the firmware program does not start and therefore this code does not change.
In ME.5 units, this code is not used for anything.

I had forgot I asked this so long ago, thanks :)