Welp. I reinstalled Debian 13.5 from Raspberry Pi Imager, and Overlay worked. Then I did "rpi-update" and Overlay no longer works.
Hooray.
FW_REV:7a0137617dd4a8496e566d23c01219923c409a79
BOOTLOADER_REV:aa33b8dc7cee51de4b75580095521dea50407d6e
Welp. I reinstalled Debian 13.5 from Raspberry Pi Imager, and Overlay worked. Then I did "rpi-update" and Overlay no longer works.
Hooray.
FW_REV:7a0137617dd4a8496e566d23c01219923c409a79
BOOTLOADER_REV:aa33b8dc7cee51de4b75580095521dea50407d6e