Checked, the checksum is correct. But I found that you changed your login only in one spot. It's likely to be an undefined behavior, so you'd better replace `04010404` to `04012f1d` in the fourth line as well to make them match

It might indicate not that a person is bad, but that the info about the subject is fragmented and hard to understand.
I'm passing this way right now: from flashing my ECU two days ago to disabling immo in EEPROM in boot mode at least 12 hours of active reading has passed. And that's for me, a programmer with a lot of years of experience.

So people naturally go the easier way and ask for help. If you can - you help, if not - ignore, that's ok.