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Author Topic: "Repairing" soldered ECU's with riser boards.  (Read 455 times)
Sandstorm3k
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Leon 1M 1.8T AUQ


« on: October 13, 2021, 05:02:39 AM »

As I have now acquired two of these stupid ECU's with these riser boards on them and have no use for them I figured it would be a fun opportunity to try and rescue these and get some soldering experience. I don't care if i break them, they are close to worthless anyway in this condition.

http://nefariousmotorsports.com/forum/index.php?topic=958.0title=

I came across this thread, and wondered where I can purchase these chip holders as i can't find them online. I can find 29F400BB and 29F800BB chips online (ebay, ali) would they be compatible? As they literally cost less then 1 euro a piece. Or would it possible to use the old chips soldered to the riser board.

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fukenbroken
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mk4 1.8T AUM


« Reply #1 on: October 13, 2021, 12:05:21 PM »

You can use those one soldered into cryptoboard wo additional hw
Flash it with bootmode then and there will be stock ecu
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Sandstorm3k
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Leon 1M 1.8T AUQ


« Reply #2 on: October 14, 2021, 01:28:17 AM »

Amazing!

Thanks for your knowledge once again.
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prj
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« Reply #3 on: October 14, 2021, 01:45:25 AM »

You can use those one soldered into cryptoboard wo additional hw
Flash it with bootmode then and there will be stock ecu
This is not always the case. Often on cryptoboard there is other chips, like 29F800TA etc.
Make sure it's the BB variety, then you can re-use it. If it's not you will have to buy a chip. Make sure you get the industrial or at least extended temperature range version.
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gremlin
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« Reply #4 on: October 14, 2021, 03:17:28 AM »

This is not always the case. Often on cryptoboard there is other chips, like 29F800TA etc.
Make sure it's the BB variety, then you can re-use it.

One more case that may interfere even BB-chip was used on riser board.
Chip can't be erased/written in boot mode if chip from riser was written in external programmer with option "protect sector(s)".
То reset this protection you must use external tool programmer before solder chip back to ecu board.
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Sandstorm3k
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Leon 1M 1.8T AUQ


« Reply #5 on: October 14, 2021, 03:33:45 AM »

Very good knowledge, appreciate the input

Would I be able to use any blank 29F800BB chip and just flash it through bootmode?
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prj
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« Reply #6 on: October 14, 2021, 05:34:49 AM »

Yes, just make sure it's SI or SE at least.
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