This message was posted on behalf of Intel Corporation
Thanks for reaching out!
I find behavior you are describing a little bit odd. The steps you are following seem fine and I believe they should have worked. Anyhow, there is one method you haven't tried yet. I know you have already flashed your board but in order to try this last method, I'd like you to do a fresh install of the image by following this guide:
After the flash, follow the steps in the screenshot below:
If you still have issues after this, please let us know.
I hope this information helps you,