One of the most useful features of a bootloader during development is the capability to download the Linux kernel from the network. This saves a lot of time because developer doesn't have to program the image in flash every time he/she modifies it. U-Boot implements the TFTP protocol (see the tftp command), so the host system must be configured to enable the TFTP service. Installation and configuration of a tftp TFTP server depends on the host Linux distribution.

The default DVDK <code>tftp </code> installation has <code>/srv/tftp</code> as work directory. It is recommended to create a subdirectory dedicated to the image files created with the DIVELK.