For this way, they are to be used Tweak called Cydia Eraser from the Cydia and relates to a method so far, we have advised fans all already well just then, it is known tends iOS 9.0.x down only if the higher is able to use it there. For the moment, it can support the following generation with iOS 9.3.3 and it completely. So, to know that they do very congested, let's follow up with me all this time!
For this method, just all go to Cydia--> Cydia search by typing the word "Eraser" and install it in your iPhone
(Afterwards, make a backup of your data to iCloud or iTunes first)
Make sure that your smartphone has a battery life up to 50%
Now open Cydia Eraser on home screen
press on Delete all data and unjailbreak then press Delete All and waiting it finished it will clean your iPhone to new like new Restore
When the process is complete, just set up the iPhone is available as new.

Note:
Cydia Eraser is only for iOS 8 to only 3.3
Can be used on smartphones all iDevice
Tags:
IOS