Found a flashing counter
Jun 13, 2011, 03:51 AM
#1
Found a flashing counter
Well... it's definitely there.
So not only is there a calibrationshop ID which needs to be altered to go into flashing mode, but there is also a Mode10/85 counter (Mode10 is generic init, 10/85 is programming session request)
I tested it out, with ECUFlash at least it gets incremented every time the ECU is told to go into a programming session.
It looks like it can be reset, but without knowing what a factory counter looks like its kinda pointless at this stage.
Interestingly enough, Mode21+C0 (Which is Coding Counter request from MUTIII) doesn't actually reference the right memory variable, it returns the string one byte AFTER the counter..
Anyway's the ECU has a Serial EEPROM Chip in it - which is used to STORE things like VIN/Variant Coding and obviously the flash counter when the ECU's power is removed...
Pretty cool stuff..
FWIW - my bench ECU is upto 0x49, and tomorrow I might connect to my car ECU to see what its up to
Cheers
D
So not only is there a calibrationshop ID which needs to be altered to go into flashing mode, but there is also a Mode10/85 counter (Mode10 is generic init, 10/85 is programming session request)
I tested it out, with ECUFlash at least it gets incremented every time the ECU is told to go into a programming session.
It looks like it can be reset, but without knowing what a factory counter looks like its kinda pointless at this stage.
Interestingly enough, Mode21+C0 (Which is Coding Counter request from MUTIII) doesn't actually reference the right memory variable, it returns the string one byte AFTER the counter..
Anyway's the ECU has a Serial EEPROM Chip in it - which is used to STORE things like VIN/Variant Coding and obviously the flash counter when the ECU's power is removed...
Pretty cool stuff..
FWIW - my bench ECU is upto 0x49, and tomorrow I might connect to my car ECU to see what its up to
Cheers
D
Jun 13, 2011, 04:19 PM
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Jun 14, 2011, 12:12 AM
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So this means that there IS a way to find out if someone has actually flashed its rom, right?
Would it help to have a stock new car to see what the flash counter actually shows?
I will get my car (EDM) in a few weeks. After that I could report.
IMHO the best trick to always have the factory setting would be to read the current value before flashing, flash the new rom and then reset the counter to the old value. But I fear this would involve additional tools/steps when flashing a rom.
Would it help to have a stock new car to see what the flash counter actually shows?
I will get my car (EDM) in a few weeks. After that I could report.
IMHO the best trick to always have the factory setting would be to read the current value before flashing, flash the new rom and then reset the counter to the old value. But I fear this would involve additional tools/steps when flashing a rom.
Jun 14, 2011, 02:07 AM
#9
yeah it would be nice to see what the value is for a virgin ecu.
and if people are interested I can probably write a program to reset it to whatever.
but i dont think this is the process mitsu use to invalidate warranty
because this counter is also incremented when mitsu update the ECU using MUTIII
and if people are interested I can probably write a program to reset it to whatever.
but i dont think this is the process mitsu use to invalidate warranty
because this counter is also incremented when mitsu update the ECU using MUTIII
Jun 14, 2011, 02:19 AM
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Anyway as you wrote MUTIII reads the wrong value so it seems no Mitsu technican would be able to read the current value.
BTW. in some data sheet for the M32182F8 I read that the system is rated for only 100 flashes. I know that the ECU actually uses another CPU but don't know how much flashes are possible with that ECU board. Do you or anyone else have much more than 100 already?
Jun 14, 2011, 07:38 AM
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interesting. Would also be curious to see a before and after flash count of the Cobb AP being unmarried. I thought Cobb mentioned this counter BUT when flashed back to stock, it also flashed the original flash count back as well....
