What is the chksum, and why is so important for chips to work?
In a nutshell, the chksum is the ecu’s accountant. It reads the binary data and adds it up and checks the results against the actuals in a hidden/encrypted bin location(s). Some ecu’s only perform this on boot-up and others are continually processing /checking / validating the code. Kind of like when you do a head count of your children all the while you are walking through Disney World. If they are all there, everything is cool, otherwise, shut down and abort mission. The chksum is also the digital signature of the binary/hex file too. Each chip tuner’s file has been uniquely created and has a unique chksum. This way companies can copyright, or trademark their product or code. Our chips will always have our chksums and no one else’s, guaranteed.
