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Author Topic: 8D0907551F RS4 Faulty EEPROM?  (Read 4812 times)
OberlandRacing
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« on: June 04, 2022, 03:11:21 AM »

I have this spare ecu laying around and it wont connect to Nefmoto Flasher or MPPS Flasher.
I Got this IMMO3 File from the EEPROM. It had also bad CS.
Is this a faulty EEPROM File? Im wondering on the "Cant decode VIN" and "Flash Programming 255" part.
I Flashed a IMMO2 File and the ECU dont want do connect eather. Is a IMMO2 file working ona ECU like this?
Just Bootmode is Possible.

Read in 512bytes
WARNING: cannot decode VIN, try setting VIN to fix
WARNING: cannot decode ImmmoID
EEPROM Status:
- Type: ECU_eeprom
- Version: Immo3
- VIN:
- SKC: 065535
- Immobiliser: Off
- Checksum: OK
- Size: 512bytes
- Cluster Code: FF FF FF FF FF FF FF
- P0601 DTC: set to FF FF
- Immo ID:
- Softcoding ID: 65535
- Tuner Tag: Not Set
- Flash Programming (successful): 255
- Flash Programming (attempts): 255
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elektronik13
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« Reply #1 on: June 04, 2022, 04:02:23 AM »

I have this spare ecu laying around and it wont connect to Nefmoto Flasher or MPPS Flasher.
I Got this IMMO3 File from the EEPROM. It had also bad CS.
Is this a faulty EEPROM File? Im wondering on the "Cant decode VIN" and "Flash Programming 255" part.
I Flashed a IMMO2 File and the ECU dont want do connect eather. Is a IMMO2 file working ona ECU like this?
Just Bootmode is Possible.

Read in 512bytes
WARNING: cannot decode VIN, try setting VIN to fix
WARNING: cannot decode ImmmoID
EEPROM Status:
- Type: ECU_eeprom
- Version: Immo3
- VIN:
- SKC: 065535
- Immobiliser: Off
- Checksum: OK
- Size: 512bytes
- Cluster Code: FF FF FF FF FF FF FF
- P0601 DTC: set to FF FF
- Immo ID:
- Softcoding ID: 65535
- Tuner Tag: Not Set
- Flash Programming (successful): 255
- Flash Programming (attempts): 255
unfortunately, this reading is total scrap
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OberlandRacing
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« Reply #2 on: June 04, 2022, 04:08:09 AM »

Atleast thats good to know. That would make sense why the ECU wont Run.
Do you know if a Immo2 eeprom works on a immo3 ECU? 
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OberlandRacing
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« Reply #3 on: June 04, 2022, 04:13:09 AM »

Just compared the Files from the IMM02 to the IMMO3 and saw that the File was completely wiped....
Shoud have checked this before..
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elektronik13
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« Reply #4 on: June 04, 2022, 04:36:55 AM »

Just compared the Files from the IMM02 to the IMMO3 and saw that the File was completely wiped....
Shoud have checked this before..
eeprom is written for a specific flash and should not be changed and maybe that's why you have this problem because someone did it
such changes to the eeprom ecu can damage the ecu
« Last Edit: June 04, 2022, 04:40:56 AM by elektronik13 » Logged
OberlandRacing
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« Reply #5 on: June 04, 2022, 04:40:47 AM »

I tried to write the EEPROM but it stays always empty.
I Think the EEPROM is dead tbh. Someone soldered it of the ECU.
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OberlandRacing
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« Reply #6 on: June 04, 2022, 04:45:33 AM »

eeprom is written for a specific flash and should not be changed and maybe that's why you have this problem because someone did it
such changes to the eeprom ecu can damage the ecu

That coud be the problem im dealling with. I Tried to put a M-Box file on the ECU and it wont take it. Just the Stock RS4 F Files.
Is there a Work-around? I would try to put a new EEPROM on it and also would like to Put a M-File on.
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elektronik13
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« Reply #7 on: June 04, 2022, 04:47:26 AM »

I tried to write the EEPROM but it stays always empty.
I Think the EEPROM is dead tbh. Someone soldered it of the ECU.

maybe someone has enabled on eeprom write protection
« Last Edit: June 04, 2022, 04:49:49 AM by elektronik13 » Logged
OberlandRacing
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« Reply #8 on: June 04, 2022, 05:08:49 AM »

maybe someone has enabled on eeprom write protection

I coud try to pull the Write Protect to GND and try again reading. The Seller told me that he desoldered the EEPROM just for swapping it. So i dont think there is a read/Write protection
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elektronik13
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« Reply #9 on: June 04, 2022, 02:22:48 PM »

I coud try to pull the Write Protect to GND and try again reading. The Seller told me that he desoldered the EEPROM just for swapping it. So i dont think there is a read/Write protection
if there is no protection on the eeprom then it must have broken the eeprom or you are using a poor quality programmer
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OberlandRacing
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« Reply #10 on: June 05, 2022, 10:43:16 AM »

Im using the ME7EEPROM  & eepromtool_04 and on all other ECU´s it worked just fine.
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elektronik13
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« Reply #11 on: June 05, 2022, 04:07:53 PM »

Im using the ME7EEPROM  & eepromtool_04 and on all other ECU´s it worked just fine.
this device is not well polished and sometimes plays tricks
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OberlandRacing
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« Reply #12 on: July 01, 2022, 02:35:31 AM »

So Finally, ECU is back to Life.  Cheesy
After 1H Oscillating the Eprom was dead.
Now i removed the immo but im not able to flash it to a 551M.
Also in Bootmode there is no chance. Im just able to put a F File on it.
Is there a Workaround for that?  Huh
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IamwhoIam
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« Reply #13 on: July 01, 2022, 03:40:52 AM »

Desolder the flash and solder a new one in?
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OberlandRacing
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« Reply #14 on: July 01, 2022, 04:16:44 AM »

I think that’s no problem with the Flash itself.
The CPU won’t take the M File. I don’t know why.
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