So I had this old micro sd card lying around, and the one I usually use for prints was in my new (to me) lulzbot TAZ6 I got for $500 on facebook marketplace, so I decided to use this old one. And me, being me, I didn't delete all the files on it before I put it in my Ender 5 w/ 4.2.7 board.
Turns out…it had a .bin file on it for a weather station I have. Now my Ender 5 won't boot, and I've re-copied the lastest firmware onto the sd card, but it's still not booting or loading the new firmware. Did I overwrite the bootloader? If I did I think I'll probably just get a new board rather than try to sort this one out.