Remote control not work after update

I have OSMC running on raspberry yesterday I have update OSMC but my remote control (OK) button not work. (it’s work fine before)
The remote is a chineese model with usb dongle it is IR/RF remote with keyboard on the back.
the battery is fine, the others buttons work fine back,esp… but not ok button.
so how can I resolve the problem? or how can I downgrade to the version before ? or reinstall OSMC with ssh wiyhout loose my others raspberry partitions?
I sure tha the problem come from the uodate because the remote work fine on noobs raspbian… on the same raspberry.


To get a better understanding of the problem you are experiencing we need more information from you. The best way to get this information is for you to upload logs that demonstrate your problem. You can learn more about how to submit a useful support request here.

Thanks for your understanding. We hope that we can help you get up and running again shortly.

Thank you for tour answer where can found the log file in osmc please?

Sam gave you a link, please comply.

OK Thann you I will read entire link