rld1d specifies a partition. You do want to use rld1, which is the whole disk. There is an offset when flashing U-Boot, I don't recall what it is. If you're using an image from armbsd.org, unless it's "generic", it should include U-Boot, which then you can dd the image without an offset.
See this: https://wiki.netbsd.org/ports/evbarm/rockchip/
It says to use 9.0. I'm pretty sure you don't have to. But if that's what you do, it works. Just get any version running; then it's easy to upgrade.
See this: https://wiki.netbsd.org/ports/evbarm/rockchip/
It says to use 9.0. I'm pretty sure you don't have to. But if that's what you do, it works. Just get any version running; then it's easy to upgrade.
