Replace your rootfs

Hello.
Just bought a Rock 4 SE to run some 32 bit programs in place of my old PI 3B+ due to more memory.
But I can’t find any OS for armhf .
Tried “replace your rootfs” (https://wiki.radxa.com/Rockpi4/dev/rootfs) but no success.
So is it that the Rock 4 SE is not compatible with the Rockpi4?

Kurre

At which step did you encounter problems?

Hi.
Done everything twice but it just want to boot up, nothing happends, just a blank screen.

But I have fixed it by adding a second architecture armhf and installed all package i needed.

Tanks anyway.

Kurre