Did Navaismo brick my Ender 3?

Hi.

I used the firmware for the CR4NS200320C13 @ 150k baud (suggested) and now all the machine does it boot to the splash screen. I can't even get a factory firmware to flash now.

Yes, I used the original SD and used minitools to format it per the directions. I also tried a different SD and still only get the splash screen.

TIA.