Is there a tutorial to change the resolution of the hdmi output to 720x480?
If someone has achieved it, it would be so kind to comment on how it was done.
Thanks.
Maybe edit the overlay for the A10 chip and bring it to the board:
https://github.com/OLIMEX/olinuxino-overlays/tree/master/sun4i-a10
Edit: try via xrandr
I was able to change the resolution by editing uEnv.txt in boot.
I just added the line:
optargs=video=HDMI-A-1:1280x720@60e
Save the changes and ready.