@Sergioclr are you sure the board has secure boot enabled? You should install a USB-to-UART TTL device.

After compiling many (10+) images, I was not able to boot a single one through SD card and the "toothpick" technique. It is not my character, but I give up. I am grateful for your support and patience. Thank you. Sergioclr.

@Jugo Slaven it seems you are running Android not Armbian. These forums are for Armbian Linux not Android. You should ask your question at a site that deals with Android.

Providing logs with armbianmonitor -u helps with troubleshooting and significantly raises chances that issue gets addressed.

@SteeMan Firmware on my android box is for MXQ 4k 5g, older original version, and I can send you if you want the .img file of the firmware.The CPU of my android box is sun8iw7 Allwinner.When I power OFF the box I can't power on it anymore.