kess v2 error rsa

[micheleyr6]

hi I have a problem with kess...
the ecu is a edc16 u1 vag..
when I go to upload the file to write to me from the error of the rsa is to me to get out...
the file is not ori but already modified previously, I did start to warm...

[ugoboss]

hello, may be being modified is already written, there is the area cks is not in place, and the sw is not able to be recalculated, and a little effort to explain, you should see the file, otherwise try to calculate first the cks with a separate program, if you want to post it there I look.

[micheleyr6]

Well thanks...now or tried to take the part of cks from the original file....and pasted the modified file..the program of kess makes me upload right now..just the machine let's see if it makes me write

[micheleyr6]

to I am able to write to the file with the operation described above.
I have to say that it is just that I'm using kess,I've always used the rooster..
however, by this or understand that:
the kess writes or the modified file to the original file or an already previously written by kess...
thanks to ugoboss for having responded to me..