Be careful about unofficial updates. You may lose some functions after the update.
Those files are absolutely official updates, at least as official as the ones you sell -yes, you sell them, you ask for a payment to get them-.
I have checked trough DIFF those files against the ones you sell and they are identical. I only try to avoid people for wasting their money on something they can find for free, as I don't find ethical to enrich yourself with the work made by other people -SEAT in this case-.
None of the functions are lost, but in the case you loose the menu entry for some functions -not the function itself- you have a troubleshooting guide in the post to bring them again. There are a lot of users on that forum that have updated their systems without issues.
Enjoy.
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