Download the Toradex Easy Installer from the Toradex Wiki and extract the downloaded archive onto a SD Card or USB Stick (FAT32). Insert the into the Board's SD Card slot or USB port and power it on.

Interrupt the boot process (hit any key) to boot into uBoot. Now run run bootcmd_mmc1 to boot from the SD Card or run bootcmd_usb0 to boot from USB.

Note that while Toradex recommends using the run distro_bootcmd this will boot from the modules internal flash if a bootable image is present.

If you get an error along the lines of bootcmd_usb0 no found chances are that the board runs an older version of uboot that does not come with distroboot. In that case the bootloader can be updated by flashing a new toradex image as described here .

Note that if Toradex's update.sh script fails with not space left on device, you can try increasing the MIN_PARTITION_FREE_SIZE in update.sh to work around the issue.