The "not so good" copied dice versions, seem to have probs with the send periodic msg function which is used for prog mode. I try to do a workaround later...

You need to read the errors first to be able to clear

Here this is minimum connection to CEM on bench. https://www.matthewsvolvosite.com/forums/download/file.php?id=74839 On D connector: Green: HS CAN-L to pin 14 OBD White: HS CAN-H to pin 6 OBD Grey (pin 6 ): GND Yellow (pin 8 ): +12V Blue (pin 15 ): +12V Also it needs +12V on the both big connectors ...

The beginning looks good, but later something goes wrong, maybe power issue?

Copy the bytes into HXD and save as bin to get your file...

Your code should be: 23 42 90 61 52 76

Not the best read, some errors still but should work for this purpose...

Maybe to long wires or something...

You should just copy paste the binary data like this, you saved the txt file

You just need to overwrite 206751 delete nothing or add nothing, works best with HXD