Checksum correction without the original file

[canotto2000]

Hello forum,

I have a problem calculating the checksum with a file that is read by an ECU MSB Discovery changed, and with the socket, PLCC, I don't have the file .ori and even if I managed to correct the map, I can not get him to calculate the checksum. On the ECM I found a drv is almost the same that helped me correct the map, but the saved file does not makes me start the engine. Then I have another doubt, when I write the eprom M28F102-120K2 with the programmer GQ-4x, I change again the chk, and I can not understand why.

Who can help me?

Thanks in advance

[canotto2000]

Good evening,

for the programmer I solved it, it was the adapter, the chinese included, I sling now and it works well.

It remains for me only the problem of the checksum, this evening I found a drv of ECM that is identical to my mod file, I'll try to fix it and see if it works.

If you have any tips, please write them, thanks and good night to all.

[sportknight]

do it with winols,you corrects also without file golds that among other things you might find in a database or online

[canotto2000]

Good morning, in fact, I have terminated unexpectedly with the ECM.
I found in the drv like that, and I correct the cks.
Now it works well.

Thanks Sportknigth

[carlo abarth]

the network is of all download file gold the next time, and fix it chek from your mo files!!

[canotto2000]

Evening to all,
Charles you are right, but is not...
However I managed the same.
Thank you thank you