I have TVbox MyGica atv329x with s905x SOC.
I have stock firmware with Android 7.1 I have never applied patches, custom firmware e.t.c.
I use the 'Armbian_20.05.0_Arm-64_buster_current_5.6.0-rc4_20200304.img' image to write on SD card using dd.
I have prepared SD: set 'meson-gxl-s905x-p212.dtb' into 'uEnv.txt', wrote the 'u-boot-odroid-c2.img' u-boot image using dd commands from this topic.
But I can't enable a universal multiboot.
Standard android update utility is empty. I tried to set different source there (External SD, Internal SD).
I tried to install the 'aml_autoscript.zip' file using the stock recovery but I had the error 'zip is currupt'.
It's very strange that the 'aml_autoscript.zip' file has zero size and it's empty.
# du -h aml_autoscript.zip
# cat aml_autoscript.zip
Is there a manual way to install multiboot using root access to the system?