Reading from dump for VW MFD - GSM-Forum

aamer75 · 12-24-2012, 15:44

Hi all

I hope I am not breaking any forum rulez with this as I am new here. I need reading from the attached dump ( I included .HEX and .BIN). If anyone can help PLEEEEAAAASE because CODE is lost due to car battery change...

masterskay62 · 12-24-2012, 17:02

Hi. I think that your dump bad . Read again.

zmajtv · 12-25-2012, 00:54

Try to reduce power supply. Reduce to 10V and try to read.

aamer75 · 12-25-2012, 16:18

Thanks guys,
I solved it last night, so here is a small "HOW-TO" for others with same issue.
I hope you have managed to connect +12V, SAFE and Ground.
More details on how to connect the VW MFD available here (scroll down): VW MFD Navigation System

Firstly there must be some kind of Programmer, serial preferably that you can use to read eeprom from MFD. If you don't have the programmer stop reading this text as it is the most neccessary TOOL to unlock your VW MFD

The programmer doesn't neccessarily need to be FIS. Any programmer that can read PIC 24CXX will do.

Second, you must connect SDA and SDL pins to the PIC24CXX Socket on the programmer. So basically you must know where is SDA and SDL pin on the programmer for the PIC 24C32 socket.
Normaly the socket is the place to put the PIC24C32 eeprom in order to read/write it.
So in order to find SDA and SDL pins and conncet them to corresponding SDA and SDL pins on the MFD Motherboard you can refer to 24C32 datasheet.
Here is an example of the 24C32 eeprom with SDA and SCL Pins:

Connect SDA pin from the VW MFD Motherboard to SDA pin of the 24C32 Socket and do the same for the SDL.
Very important:
find the 5V pin on the VW MFD Motherboard and bring externaly +5V in order to power the eeprom so it can be read.
Bring the ground from the programmer to ground (chasis) of the VW MFD.

Once you connected everything power on the VW MFD.

Start ICPROG.EXE program in order to read the EEPROM content. Select 24C32 and read it.
You should the progress bar and after it some garbled (hyerogliphs).
Among the content of the text (most right column of the ICPROG.EXE Screen) you should see some text like (scroll down) 3B0035186 which shows correct reading of the eeprom. If you can see this than save the result into a file and post it here for "Code reading".

If you got your reading as hyerogliphs without 3B0035186 than your reading is incorrect and there is no 5V supply provided on your MFD Motherboard which your 24C32 EEPROM needs to operate so you can read its content. Also it could mean that your eeprom is fried (read DEAD) and needs replacemet. If this is the case you must find .bin file that have correct eeprom configuration with CODE that you can use for your eeprom programming.

Good luck

12-25-2012, 16:18	#4 (permalink)
aamer75 Junior Member Join Date: Aug 2012 Location: sarajevo, Bosnia and herzegovi Posts: 6 Member: 1795354 Status: Offline Thanks Meter: 2	Solved!!! Thanks guys, I solved it last night, so here is a small "HOW-TO" for others with same issue. I hope you have managed to connect +12V, SAFE and Ground. More details on how to connect the VW MFD available here (scroll down): VW MFD Navigation System Firstly there must be some kind of Programmer, serial preferably that you can use to read eeprom from MFD. If you don't have the programmer stop reading this text as it is the most neccessary TOOL to unlock your VW MFD The programmer doesn't neccessarily need to be FIS. Any programmer that can read PIC 24CXX will do. Second, you must connect SDA and SDL pins to the PIC24CXX Socket on the programmer. So basically you must know where is SDA and SDL pin on the programmer for the PIC 24C32 socket. Normaly the socket is the place to put the PIC24C32 eeprom in order to read/write it. So in order to find SDA and SDL pins and conncet them to corresponding SDA and SDL pins on the MFD Motherboard you can refer to 24C32 datasheet. Here is an example of the 24C32 eeprom with SDA and SCL Pins: Connect SDA pin from the VW MFD Motherboard to SDA pin of the 24C32 Socket and do the same for the SDL. Very important: find the 5V pin on the VW MFD Motherboard and bring externaly +5V in order to power the eeprom so it can be read. Bring the ground from the programmer to ground (chasis) of the VW MFD. Once you connected everything power on the VW MFD. Start ICPROG.EXE program in order to read the EEPROM content. Select 24C32 and read it. You should the progress bar and after it some garbled (hyerogliphs). Among the content of the text (most right column of the ICPROG.EXE Screen) you should see some text like (scroll down) 3B0035186 which shows correct reading of the eeprom. If you can see this than save the result into a file and post it here for "Code reading". If you got your reading as hyerogliphs without 3B0035186 than your reading is incorrect and there is no 5V supply provided on your MFD Motherboard which your 24C32 EEPROM needs to operate so you can read its content. Also it could mean that your eeprom is fried (read DEAD) and needs replacemet. If this is the case you must find .bin file that have correct eeprom configuration with CODE that you can use for your eeprom programming. Good luck Last edited by AkaGura; 12-25-2012 at 17:36. Reason: rules

12-24-2012, 17:02	#2 (permalink)
masterskay62 No Life Poster Join Date: Jul 2011 Location: Ukraine Posts: 3,538 Member: 1617831 Status: Offline Thanks Meter: 3,639	Hi. I think that your dump bad . Read again.

12-25-2012, 00:54	#3 (permalink)
zmajtv Junior Member Join Date: May 2007 Location: Jagodina, Serbia Posts: 29 Member: 501255 Status: Offline Thanks Meter: 17	Try to reduce power supply. Reduce to 10V and try to read.