check sum help needed !

[shiumpo]

Hello, this is about edc 16c3 Peugeot 307.

I include original and edited files. Somewhy I couldn't write the edited file with mpps or Kess. On mpps, it says flash checksum error and on kess, it says checksum buffering error.
Any ideas?

[dominik.m]

In so called mod checksum it's ok. In ori file it's not ok.

[shiumpo]

hmh but then why i cant flash it ? to my ecu ?

[TuningInside83]

make your changes from this original file and then calculate the cheksus