They worked. Thanks!
I didn't have any issues - all updates worked the first time. All versions are up to date, and all functions are working as expected.
With that said, I do recommend people observe the estimated time on each of the steps. For me, at the end of Step 4, the second time (the dark screen where it says "Updating software." after you reboot), the progress bar looked like it was at 99% and hung for about 5 minutes. I just waited it out, since the instructions say that step can take 5 minutes, and it eventually succeeded.