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bluevrt
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« on: January 05, 2011, 06:59:59 PM »
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I'm trying to read the eprom from a 2k Jetta VR6, ME 7.1.1 021 906 018 M which has a 29F400BB eprom. I have a HEX+CAN usb cable, a bench flash setup, and am using ECU Flasher 1.6.1.0. It connects after a couple of trys but when I select 'read entire flash' I get a failure stating 'immibilizer not authenticated'.
Anyone have advice on how can I get around this?
Thanks in advance.
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kls
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« Reply #1 on: January 05, 2011, 10:09:32 PM »
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You have two options.
#1 is to install the ECU in a car and match it to your cluster so the immobilizer requirement will be satisfied.
#2 is to disable the immobilizer in the ECU. This will require you to read, edit and write back the eeprom image (not the flash image which is what you're trying to read)
To read the eeprom you will need hardware compatible with whichever 8 pin device your ECU has. If you are able to read and write to the device the information is posted on here to disable the immobilizer, or else post it and someone can likely do it for you.
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bluevrt
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« Reply #2 on: January 05, 2011, 10:30:56 PM »
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I see a ST 950430 - would that be the serial eeprom? Anyone have a datasheet for it?
Thanks
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kls
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« Reply #3 on: January 05, 2011, 10:52:49 PM »
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Hmm, I would think its really a 95040 which is a SPI eeprom.
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bluevrt
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« Reply #4 on: January 05, 2011, 11:15:47 PM »
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 I saw reference to the serial eeprom on the bottom of the board in another thread but there's not one on my board, just a ram and a 7400 series chip down there. |
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kls
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« Reply #5 on: January 05, 2011, 11:43:37 PM »
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I am sure that is your eeprom in the picture. You should be fine to read it as a 95040 (you had posted 950430 in your original post)
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setzi62
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« Reply #6 on: January 06, 2011, 03:20:51 PM »
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The ST device labeled 950403 is the EEPROM 95040. Here is the datasheet.
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bluevrt
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« Reply #7 on: January 06, 2011, 08:09:16 PM »
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Much appreciated!
Still waiting for my eprom programmer, maybe tomorrow.
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bluevrt
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« Reply #10 on: January 08, 2011, 09:25:49 AM »
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Jason
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Breaks everything!
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« Reply #11 on: January 08, 2011, 10:44:02 AM »
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Yeah, I was going to pick one of those up as well, since I have a bunch of spare chips. Was even considering socketing one of my ECU's but just carrying a spare ECU seems like a better idea.
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