@EdsNotHere If the card is write protected slide the switch on the side that says lock....works like an old floppy disk.
I got mine installed and it refuses to validate. Keeps getting an error that says Navigation failed to Authenticate.
Starting the Download again.
So far for me that is 2 updates cycles and 2 failed updates. Some massive growing pains still.
Also, I figured out that you cannot roll back to an older version if you have a failed update. *SIGH*
So now I'm stuck with a half updated system.