I've tried following multiple instruction sets like these and never managed to get this to work. It never boots from the USB.
https://forum.doozan.com/read.php?2,134563,135067#msg-135067
https://linux-mmp.docs.kernel.org/dell-wyse-3020.html
I think it has to do with the instructions sets not being completely comprehensive and I think I might be missing a step or two. Is there a comprehensive guide to doing this?