Some developers who went to BlackBerry 10 Jam or the World Tour and did a security wipe of their BlackBerry 10 Dev Alpha realized a big pain point of the device. If you wiped it then you would lose apps like the Camera and such along with a few other features. Shane over @OSBB noticed that RIM confirmed in the Beta Zone forums that they have made the OS unbricking process possible. For now that means offering the original OS 10.0.4.187 (some people were running 10.0.4.197) for users to update from the dev alpha.
The trick is you need the new BlackBerry Desktop Manager Software from the Beta Zone to restore your Dev Alpha. The devices are still scheduled to hopefully get a new OS update this month so hopefully this the first step of that happening.