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Flash Dump

Question asked by NSX_one on Oct 9, 2012
I have this problem with a ST10F269 mounted on an automotive ECU: the flash dump and programming go straightforward, even the programming with different software releases is OK.
What I can't do is editing the data eeprom; my aim is to modify operating parameters, but if I change them, or even plain data such as the numbers of software / hardware release, or the programming date, the ECU will not re-start.
I see there's a 17th byte at the end of each dump row, and think that's the matter, but if I cut and paste a whole row (the same locations) of a different release dump from another ECU, it won't work anyway, so it doesn't look a check on the content of a single row....
I'm using ST10flasher.
Thanks for your attention.