Checksum???

by **gbovs** » Mon Mar 25, 2013 4:26 pm

Checksum is used as has been said: by the program to check if the file has been altered.
But is also used on a line by line basis of code -for the same purpose.
Most of the eeproms use it on that basis.

by **david costa** » Thu Oct 09, 2014 11:10 pm

Hi, can someone verify and correct my checksum please?
ECD15C2 Peugeot 406 Coupe 2.2hdi.
Attached original and modified files.

by **Gaz-M** » Fri Oct 10, 2014 11:51 am

So, we take original file, modify it- then the software puts the original checksum back on so the ECU cant detect any modification?

Is that right?

Does MPPS always do this automatically when loading map back on?

by **Bongo323** » Fri Oct 10, 2014 2:09 pm

MPPS does not modify the checksum automatically
Just upload the file exactly who you are without changes
If you behold matter was :think:

by **kennfeld** » Sat Oct 11, 2014 9:06 pm

Gaz-M wrote:So, we take original file, modify it- then the software puts the original checksum back on so the ECU cant detect any modification?

Is that right?

Does MPPS always do this automatically when loading map back on?

no that does only work on very few old ecu's about 20 years ago ...