Could you help me how to fix it, what the problem it ?
Try renaming the file s805_autoscript in aml_autoscript ( replace existing aml_autoscript) and try to start via the reset button (using a toothpick). Are you using SD card or USB flash drive to write the image ? Note that to activate the multi-boot you need to use the SD card (it has to be done once), then the system will run from the Sd card and USB flash drive. It is a feature of some variants of recovery in some models of TV consoles.