1. From Android selected and executed "aml_update.zip", for activation boot.
2. Writed to USB-flash drive "armbian" image.
// Tryed "Armbian_20.05.0-_Arm-64*" (tryed buster, focal 5.5.1 20200212; yesterday tryed Armbian_20.05.0-trunk_Arm-64_bionic_dev_5.6.0-rc1-next-20200214_desktop - all booting and working OK from USB-flash)
3. Edited uEnv for "p212". Inserted USB-flash and boot :).
4. Launched ./install_aml.sh from root folder, script executed done.
5. If I try boot without USB-flash - looped bootscreen "x96"; USB booting OK.
P.S. TV-box "X96", 2G RAM/16G ROM
PCB: "Q2X V2.1"
eMMC: Samsung KLMAG2WEMB-B031
Wi-Fi: RTL8189ETV