Okay, so I tried to flash kimera-core.hex instead of kimera.hex but then the board isn't find by Windows. As long as I keep it on Kimera the board registers keys and is found by Windows as a keyboard. But when I drag my own made keymap.eep in the reflash.bat, it looks like it's going well but in the end weird things happen: my Home button registers as spacebar, my Z is nowhere to be found etc. So it looks like the layout still isn't what it should be.
I Don't know if the screenshot from TKG gives any useful info?