[Simple]

The updates are for DiagBox v8.xx. If you have DiagBox 7.83 and don't want to upgrade to 8.17, but want to benefit from the new software, then you remove the APP folder of DB 7 and replace it with the APP folder of DB 8, it is taken from DiagBox 8.35.. Then you can restart the computer and run the updates and start DiagBox again to implement them.

If you have DiagBox 8.17, then you already have the new engines and all you need is only the updates from 8.17 onward. You just run it then start DiagBox and it will perform the update.

Please read the instructions of each release carefully.. it will work.