Wyze v3 uboot missing "setnor16m" and other commands

[plush]

I replaced the firmware on a Wyze v3 camera (model WYZEC3B, SOC Ingenic T31X, 16MB NOR) using the official installation guide, but I cannot complete the process as the bootloader is missing setnor16m and many other values.

The bootloader environment looks like this. I have another camera, same model, that I flashed several months ago. That one works perfectly and the environment looks very different, containing e.g. the setnor16m that I am missing. I always used the newest prebuilt firmware from the website and I don't have the image that I had flashed on the earlier camera to play around with anymore unfortunately.

I tried copying over the entire environment from my working camera, ran saveenv and then run setnor16m. I got no errors, but the bootloader is still not finding the partitions it needs, see the attached boot log. I know I am running the OpenIPC bootloader, as the prompt is OpenIPC #. I also tried downloading and re-flashing just the bootloader, following the advanced section of the installation guide, but it made no difference.