Hello @ all,
I'm new in ECU optimization. I already did some ECU Tunings with some Audis and VWs...I read out the original files, send them to someone who optimizes it for me and then he send it back to me. So my problem with the e46 ECU Tuning is, that my tuner said i have to create the checksum by myself with my flash program. But i don't know how to do this, I'm using MPPS v16 clone, by the way. Can anyone please tell me how to do this or can someone do this for me??
Hope somebody can help me.

Greets from Germany and sorry for the bad english ;)

try This i used in e46 320d and worked
1- with ECM
2- Verify Checksums
3- open file
4- select EDC plcc32
5- Select compute
6- Select Correct File
7- Select Save File

good work !!