Mender-convert with rpi cm3 b+

I am trying to get mender working with the rip compute module 3b+. The first thing I tried were these images here:

https://docs.mender.io/get-started/preparation/prepare-a-raspberry-pi-device

and also here:

The cm 3b+ didn’t boot with these images. I also tried mender-convert with a fresh image:
2022-09-22-raspios-bullseye-armhf-lite

With the original image, the cm3b+ boot just fine. But not with the mender converted image.
I see momentarily the coloured screen and then blank. I also tried to see what on the part output. All I get is this message:

U-Boot 2020.01-g83cf4883ec (Dec 08 2022 - 09:32:45 +0000)
DRAM: 948 MiB
RPI Compute Module 3+ (0xa02100)

Maybe I need to change something because I am using the cm3 b+ and not the rpi 3 b+?

Just incase anyone is having the same issue, you have to built u-boot again for the correct device tree as there are different configs for the CM3 and the RPI3.