How to Make Checksums for ECU Files with WinOLS

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This is a little tutorial show how to make checksums for ECU files with WinOLS.

WinOLS Video+PDF Tutorial Download

 

Checksums are very important, get them wrong and car will not start or even worse.

1.If you have not installed WinOLS 2.24 first, then do so, it can be found here:

WinOLS Free Download for Win XP/Win 7 Installation

2.Open winols, and after you will see the empty working box, picture 1A.

Now drag and drop your ecu file onto this box as in picture 1B.

Now in picture 1

You can see there are 3 checksums that need correcting, WinOLS will do this for you.

Included are two ecu files, Audi A6 3.0 lambda off ME7.1.1, one with “nochecks” (no checksum) and the other with “csok” (checksum ok).

https://mega.nz/#!5c1HgA6J!WtaxwNDqaesv5fjMxKFd96e1bs3w2BEYLymN5nyssQw

 

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