I'm trying to update the firmware of my Kontrol Z1 but when starting the update process the LEDs of the Kontrol Z1 flash for a second and than go off which results in not being visible in the update tool anymore (have to reconnect the Kontrol Z1 to make it work again). Tried both device updater version 1.2 and 1.7 but no luck, tried it on MacOS and Windows 10(in a virtual machine), same outcome. My Kontrol Z1 is currently on Firmware version 8 and the newest seems to be 16. Anybody knows why that is happening and how to solve it? Already invested 4 hours trying to solve it but no luck.