Just received 3 API's. After using one for about a week and getting it configured the way I like, I accidentally disconnected power and it seems to have made the file system a brick :(
(Edited to clarify @green's question) I decided to use this opportunity to upgrade to Ubuntu 20.04. I created 1 usb as a os and the second usb with the v20.04 img. I then booted from os usb and dd'ed the file.img (on the second usb) to eMMC raw device. When I attempt to boot I get a error message that says
could not find device and then a
GRUB prompt is shown.
What do I need to do to get Ubuntu 20.04 to boot properly from the eMMC memory?