SteeMan

Moved to userspace forum

As long as you don't install Armbian to your emmc, you should be able to still boot android by removing the SD and/or usb drives. Once you install to emmc you will overwrite the android installation

If you want to understand what should be happening under a normal installation: Installing "multiboot" (i.e. pressing the hidden reset button while powering the device) runs the script aml_autoscript That script sets some uboot environment variables that are used by subsequent boots The boot process for these boxes is to use the original android uboot to intiialize the device and then hand off the boot process to the u-boot.ext from armbian. This is done in the script s905_autoscript (or emmc_autoscript). Which then essentially just runs (for emmc): if fatload mmc 1 0x1000000 u-boot.ext; then go 0x1000000; fi; (or "mmc 0" for SD card). The chainloaded u-boot then boots via the information in the extlinux/extlinux.conf file.

Current Armbian uses extlinux to load, not uboot scripts. I can't help you unless you are willing to follow my suggestions, which you seem to not want to do.

Yes it errors because your uboot environment is screwed up by everything you have previously done. That is why I said you need to reinstall an original android firmware to set things back to a clean state before proceeding.

Given where you are, my only suggestion is to restore the box to a clean android firmware (so the uboot environment is restored to a clean state). Then restart with a current build (don't use the 6 year old build that you found somewhere). The two versions aren't compatible. Then get things running cleanly from SD card first, and then if you still want move the install to emmc.

Please use a build that isn't 7 years old. https://www.armbian.com/amlogic-s9xx-tv-box Read the FAQ and the install instructions linked there

moving to amlogic tv box forum

What Armbian image are you using? Full boot log would be helpful as well.

@Almir Oliveira why are you looking for a build that is over three years old and includes a Linux kernal that is no longer supported? Why not download the latest build from the Armbian downloads page?

Have you tried the install instructions and build from here: https://www.armbian.com/amlogic-s9xx-tv-box/

This video should give you the information you need for setting up a usb debug uart connection:

At this point you seem to have done everything properly. The next step would be to find the uart connection point on you board and hook up a usb-uart reader so you can see the debug output from uboot to see what is happening.

That is enabling multiboot (what enabled either Armbian or android to boot. I'm going through with you all the basics that you didn't mention in your original post (and that others often forget to do), to eliminate all the basic things. You say "maintain it", but you shouldn't hold that button too long, a few seconds (10 at most is all you need). Holding too long will not work.

This is required to use Armbian on the amlogic TV boxes. Enabling multiboot is one of the steps on the install instructions.