Create a new installable boot image of the current build with a minor version number change. Use the standard installation method to update the boot image. Verify that the minor version number has changed. Create a fake image. Verify that the boot updater will not install the fake image and generates an "invalid image" error message or equivalent.
Effectiveness: High
Architecture or Design Review
Check the consumer or maintainer documentation, the architecture/design documentation, or the original requirements to ensure that the documentation includes details for how to update the firmware.