fixed it myself
this is what happens when you don’t follow directions, and don’t understand what you are doing. The exact command on my site is:
cd; curl -LOf https://mrchromebox.tech/firmware-util.sh && sudo bash firmware-util.sh
when you break it into two parts, you’re removing the check (&&) that the first command succeeds before the 2nd one is run.
it didn’t, because you made a typo in the URL and didn’t notice it. If you had used the single command from my site, it would have told you the first command failed.