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Crack ECM TITANIUM 1.61 checksum work 100% fine. ECM Titanium can make right checksum, but you need push checksum menu and correct when all job is done. (ECU is MEG1.1 on 700cc Roadster. 0261205006).
Checksum (of a file) is a string that is generated from content of a file. If any byte from that file changes, the checksum will change.
What checksum is used to do?
On ECU, checksum is used to tell ECU that file inside his flash was not altered. That`s the reason why an ECU does not accept files with invalid checksum. But is also used on a line by line basis of code -for the same purpose, most of the eeproms use it on that basis.
So, if something is changed-calculate the CS. Winols/Titanium does it automatically.