Kernel headers for kernel 6.1.43-rockchip-rk3588

Trinom

Hello,
I'm trying to install anbox / waydroid (Android emulators). Both share the same anbox modules. If I try to follow the instalation procedure

Finally use dkms to build and install:

sudo dkms install anbox-ashmem/1
sudo dkms install anbox-binder/1

I receive the error message

Error! Your kernel headers for kernel 6.1.43-rockchip-rk3588 cannot be found.
Please install the linux-headers-6.1.43-rockchip-rk3588 package or use the --kernelsourcedir option to tell DKMS where it's located.

If I try to find these headers, I can't find anything newer than some for kernel 5.10.110. Google doesn't know anything newer.
Any ideas, how to proceed?
Thank you.