How to Perform a Factory Reset on a Cisco Router

Anyone who is interested to do a successful factory reset on a Cisco IOS needs to apply the below steps.

1) Power Off the Router.

2) Press and HOLD the reset button.

3) Turn the power back on.

4) Within a 60 Seconds Release the reset button and send the BREAK key/command from Console.

5) If you successfully do the above a rommon prompt on the screen.  

6)Type confreg 0x2142

7) Type reset and expect the router to restart. When the router comes back up you will be asked to start configure it. 

*** In order to enable Cisco to keep the new configurations you have to change the confreg again. ( Check Post Why does my router lose its configurations )