I've confirmed it with the official Technologic Systems images, the one I grabbed is a Debian 12 image.
Debian 12 agrees with my Gentoo image, as does U-Boot.
`HW_OCOTP_CUST0` is what I need to change, I need to figure out how that's done (or even, if it can be done).
In any case, here's the obligatory #neofetch screenshot.


π΅ 





