How to create a background APP for recognizing the Y+X buttons as (Start) on firmware?
It is a test
My best guess is that this is NOT possible, if you remember back to the A320 Y+B button problem, that was only handled in a firmware update.
One option for the x760 would be for you to modify SDL in the SDK for native to do this under the covers, i.e. SDL would report the start button was pressed, this would need to be ifdef'd so that it only happens when built with that support. I think you've built the native SDK before.
This would be something we could add to the SDK if you have a nice patch for it.
I replied to your Dingux post too.