BunkerJ So I powered it up after imaging the firmware again, with my monitor connected to the HDMI port, and it gets stuck on the rainbow screen with lightning bolt icon in the top right corner. Evidently, this indicates that the boot code is too old.
"If you have one of the latest PI 3B+ which won't boot and it keeps stuck on the rainbow screen, while also displaying the under voltage (lightning bolt) icon, and/or the red LED flashing then you are simply are using boot code that is too old. Please download the very latest version of Raspbian, or do an upgrade to it."
https://www.raspberrypi.org/forums/v...ic.php?t=58151
I just pulled the trigger on a standard RPi 3 which I should get Saturday. I'll report back when I get it in.