Ever faced problem with Nokia software updates? Well it’s a common thing now days when we have lots of apps in the market.  I have faced this situation, one fine day I updated an application to latest version in y E72 but the lately I found that after that my phone’s performance and speed had come down drastically. And it was completely hanging sometimes and I needed a hard restart (Power OFF and ON physically). Then I found out a simple way by which we can set back our phone to factory state. This simple trick helped me hope it will help you to.

Type this key: *#7780#

Note: Use this option only if required because factory settings means all settings reverted back to factory state and you need to setup the phone again.