I have decided to post my mksdcard script.
So instead of me trying to decide which sdcard image for a particular supported board to host, you can now easily create an sdcard image by selecting your supported board from this script.
Going forward I will only need to post updated uCore.
I have updated the README-1st.txt to reflect this change.
Of course, those who already run dCore on Allwinner need only to be updating their existing uCore file.