Unfortunately the basics are never documented, and customers who buy your products are left wasting time because you are not 1.Updating documentation 2. Testing products sold to your customers.
1.Following maskrom erase emmc, as per documentation using radxa-zero-erase-emmc.bin
2.Run rz-udisk-loader.bin, then burn radxa-zero-ubuntu-focal-server-arm64-20230201-1125-mbr.img.xz.
Result no LED heartbeat blink and output to HDMI.
I am an unfortunate customer who purchased 3 of your RADXA zero boards when released ( first ones released to the public)
All above works with radxa-zero-ubuntu-focal-server-arm64-20220801-0346-mbr.img.xz