BeaglePlay: Image Generation (sd_card shell script)

Hi all,

I bought beagleplay and trying to play with it.
Downloaded the official beagleplay-debian-12.7-xfce-arm64-2024-09-04-12gb.img.xz and works perfect.
Now I want to create my custom image and first only the bootloader so used https://openbeagle.org/beagleboard/u-boot-beagleplay/-/blob/main/build_u-boot.sh?ref_type=heads#L15.
Is there a script to create some sdcard.img (with fat and ext4 partitions) which I can flash with BalenaEtcher to mine SD card? I found some solutions online but for some reason it doesnt boot.

Regards

git clone https://openbeagle.org/beagleboard/image-builder.git
cd ./image-builder/
./RootStock-NG.sh -c bb.org-debian-bookworm-xfce-v6.6-ti-arm64-k3-am62
sudo ./setup_sdcard.sh --img-12gb beagleplay --dtb beagleplay-swap

Regards,

Thx will try it out