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Author Topic: Car won't start after successful flash and drive.  (Read 37035 times)
mRj
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« Reply #75 on: June 08, 2013, 10:47:37 AM »

You obviously didn't read the thread. If you did, you'd realize this is done via bootmode with no soldering required. I took a lot of time to write that, the least you can do is read it before asking questions that have been answered.
sorry, just read that bit on the first page i jumped in to the deathcode bit...arrgh bootmode Sad

just read and digested it all.

understand i need boot mode, understand i need to correct in hex to 00 and then use commandline to fix the checksum with the tool provided.

only thing im unclear of, is
a: im struggling to get my ecu in bootmode Me7.5 06a 906 032 hn
b: what software/tool is used to flash to 95040 chip

btw great help so far, and apologies again for not reading it all...i understand this advice is free and know one has to help out.
« Last Edit: June 08, 2013, 10:58:05 AM by mRj » Logged
ddillenger
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« Reply #76 on: June 08, 2013, 11:01:09 AM »

Argdubs tool, linked on page is used to read and write the eeprom. me7_95040.exe.
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mRj
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« Reply #77 on: June 08, 2013, 11:54:46 AM »

Argdubs tool, linked on page is used to read and write the eeprom. me7_95040.exe.

thanks, found that now to.

will try tomorrow, but i have to do through obd and at present, getting ecu in boot mode is proving a pain in the arse!
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mRj
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« Reply #78 on: June 09, 2013, 04:29:30 AM »

hi

got the eeprom off, struggling with boot mode on the m7.5 ecu.

is there a proper procedure to do it, and is it ok to ground pin 24 from the negative off the battery?



this is the ecu i have
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vagenwerk
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« Reply #79 on: June 09, 2013, 05:27:41 AM »

yes short this to ground battery to bootmode

[ed] Don't do this.
« Last Edit: November 16, 2015, 08:37:19 PM by nyet » Logged
mRj
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« Reply #80 on: June 09, 2013, 10:37:37 AM »

yes short this to ground battery to bootmode
thanks, still no luck at the moment Sad

i did manage to fix my eeprom (and get it off the car) - also i have deleted the two 33 33 and checksumed the correction

i just need to get it back on!  arrgh Cry
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vagenwerk
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« Reply #81 on: June 09, 2013, 01:23:03 PM »

try with 5seconds short
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vdubnation
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« Reply #82 on: June 09, 2013, 06:26:44 PM »

You might need to use a resistor I once spent the whole night trying to bootmode and tried a resistor and on the first try it worked
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mRj
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« Reply #83 on: June 10, 2013, 04:14:27 AM »

You might need to use a resistor I once spent the whole night trying to bootmode and tried a resistor and on the first try it worked

hi a 10 ohm resistor?
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vdubnation
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« Reply #84 on: June 10, 2013, 06:19:42 AM »

10 or 8 is fine
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mRj
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« Reply #85 on: June 10, 2013, 11:12:01 AM »

10 or 8 is fine

argh at my wits end - tried for 2 days now to get bootmode, still no luck

i must be doing something wrong!!!!!!!!!!
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Giannis
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« Reply #86 on: June 10, 2013, 12:36:35 PM »

i suppose you short circuit first the boot pin and after power on the ecu.
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UrbanAssaultar
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« Reply #87 on: June 10, 2013, 12:58:18 PM »

i suppose you short circuit first the boot pin and after power on the ecu.

yup, ground pin - flip on power supply, count 1-2-3-4-5, remove ground, bootmode should be "enabled"
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mRj
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« Reply #88 on: June 10, 2013, 02:30:02 PM »

been trying all night, still no luck Huh
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mRj
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« Reply #89 on: June 11, 2013, 01:26:42 PM »

FINALLY!!!!  Grin

after some advice from @vdubnation and some remote assistance, i have finally got it in to bootmode and remove the deathcode

i made a very crude bench flasher, used a 10ohm 1/2w resistor and BANG, bootmode first time and the eprom was written.

thanks for all that helped, also learnt loads just going through this little drama.
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