# Bootloader

The bootloader source code is provided as a sample application in the RSL15 Software Development Kit (SDK), and you can use it to create your own custom bootloader.

IMPORTANT: The information in this topic refers to the general non-secure bootloader sample application. If you are using the RSL15 security features described in the Security User's Guide, use the secure_bootloader sample application instead. For information about using the secure bootloader, refer to the Secure Bootloader Guide.

For more information about this topic, see: