For my RockPro64, I ran both OpenBSD 7.3 (haven't tried 7.4 yet) and both NetBSD 9.3 and 10_beta, and I found the NetBSD install process for both versions easie

For my RockPro64, I ran both OpenBSD 7.3 (haven't tried 7.4 yet) and both NetBSD 9.3 and 10_beta, and I found the NetBSD install process for both versions easier. In the end, I'm now on NetBSD 10 RC1 (just upgraded) and I'm happy. All of the important things work on NetBSD for this Aarch64 device.