Tried your image on an SD card but tried several way to get it to boot from SD was unsuccessful. I tried the toothpick on the button inside the 3.5 mm port. I tired ADB reboot update and ADB reboot recovery. But all those times, I just receive the android recovery menu when failed to boot SD.
Is there any thing special I need to do to get this box to boot from SD? I will solder some dupont pins soon so I can get a better reading what is happening with serial console.
But for now, do you know why it is so difficult to boot from SD. I never had this much issue with an AMLogic S9xx before.
How can I tell if bootloader is locked? If locked what options do I have?