I’ve followed the instructions at GitHub - mixtile-rockchip/ubuntu-rockchip: Ubuntu 22.04 and 24.04 for Rockchip RK35XX Devices and used the Rockchip Format Image to upgrade, which isn’t supposed to overwrite the Blade MAC or serial (if they’re separate things?)… and the MAC has changed 
All Blade 3s originally had MAC OUI c8:8e:d1 for both external interfaces, whereas now both have Locally Administered MACs.
How do I fix this, and restore the device to having the original MAC addresses?
Am I also correct in saying that the Mixtile Ubuntu image doesn’t include the Mixtile MIOP driver to enable PCIe networking? How can I restore this functionality with this release’s kernel:
$ sudo insmod /lib/modules/5.10.66/miop-control.ko
[ 2478.645051] miop_control: version magic '5.10.66 SMP mod_unload aarch64' should be '6.1.0-1020-rockchip SMP mod_unload modversions aarch64'
insmod: ERROR: could not insert module /lib/modules/5.10.66/miop-control.ko: Invalid module format