Updating frameware to 10.0.0-rc.64 to 10.0.6

That is strange indeed…
Did you try to update your Homey by connecting it to a pc?
See:

Tip: use a USB-A to USB-C cable, not the one provided with your Homey.

EDIT: I see another post with the exact same problem and versions as yours. The above solved it for this user: