Hello.
Please, do not double post, there’s an edit button.
Since you are in the reformat phase, you will need to complete the process to recover the unit.
Do not worry, it’s recoverable.
Do you have a picture of the error?.
Since your unit is not NAV, most likely you do not have enough space for GN with the current setup.
To recover the unit, you will need to either:
- recreate the USB as you did but without selecting gracenotes
- edit the reformat.lst file removing the references to the gracenote package