This method may not fully convert a retail console into a dev kit but it could possibly help some small developers that can not afford to purchase a full dev unit to get started on making some ideas started.
Here is the translated text from Logic-Sunrise:
Xbox One does not stop talking to her. After an announcement of a first nand dump and a software to change the hard drive of the console, this is a person wishing to remain unknown sharing this information: the method of activation Debug mode is now known! For the average user, this feature does you no good. But for devs, this can open a lot of doors. For those wishing to see the debug mode by themselves simply go to System One Xbox and press the four gates of the controller parameter (LB – RB – LT – RT) and “parameter Developer” menu will appear