Yes, looks like file is in right place.
Harold, when you press down the 4 buttons and hold down when power on KN, how long do you hold down before release?
It's important that all 4 buttons are pressed, and keep pressed until KN is powered, then release.
When success, I asume a text where confirm that you will update will show up.
Cheers 🥂
"Success is not counted by how high you have climbed
but by how many you brought with you." (Wil Rose)