1 Burn image to usb stick or microSD card
2 Insert usb stick/microSD card to device
3 Enter bootloader (press and hold Enter key on keyboard while boot device via UART-console http://wiki.jethome.ru/jethub_d1#uart-konsol)
4 Enter commands below:


### To boot from usb stick/microSD card one time ###

setenv armbian_root_device /dev/sda2                             # /dev/sda2 - for 5.7.16, /dev/sda1 - for 5.9.16, /dev/mmcblk0p1 - for microSD
run boot_default


### To boot from usb stick/microSD card permanently ###

Example:
setenv armbian_root_device /dev/sda2                             # /dev/sda2 - for 5.7.16, /dev/sda1 - for 5.9.16, /dev/mmcblk0p1 - for microSD
setenv storeboot "usb_burn jethome_burn.ini; run boot_default;"
saveenv && reset


### To reset default boot behavior ###

defenv && saveenv && reset