What is jailbreaking ? Is jailbreaking illegal? How to revoke the process of the jailbreak? How to unjailbreak iPhone iPod touch or a iPad ??

Technically jailbreak means a bypassing system mainly done in iDevices like iPod, iPhone and the iPad and sony Play Stations.. The iPhone, iPod touch & iPad hack that allow users to gain access to the entire Unix filesystem. In Unix terms, this refers to changing the root of the directory of ./ A hack that gains access to areas of the iPhone, iPod touch or iPad that users can't access with any software or something.,Typically, this is an immediate prelude to either installing cool programs, unlocking the handset for use with another cellular network, or both. Through jailbreaking, you are able to add additional applications to your iDevice. it allows to install themes via Winterboard, installing fonts and most of 3rd party softwares to your iPod touch. And also to install hacked software via iTunes with the addons like AppSync. I have mentioned how to install AppSync and how to use it in my previous post. It allows you to do so by adding an application called Cydia to your iDevice. It also allows modding of your iDevice application icons, wallpaper, dock, status bar, chat bubbles, weather backgrounds, keyboard….etc. For more information on the Cydia or Installer applications, like that..:
Is jailbreaking illegal???
Not any more... First jailbreaking was a illegal thing. But not any more. So you can enjoy jailbreaking without any hassle... But some iStores on India and Authorized Resellers in Sri Lanka (Where I live :) saying that they wont accept jailbroken iDevices to claim the warranty. Best thing is to revoke the jailbreak before claiming warranty ;)
So how I can revoke the process of jailbreak? ( how to unjailbreak )
When we jailbreak our iPhone or iPod or iPad the jailbreak tool writes some notes and files on the root drive. By doing a full restore via iTunes, we can delete some of them. To clear the all junk you have to get the DFU mode ( Default Firmware Upgrade ) and then fully restore with iTunes.. Yes it will make your iPhone iPod touch or iPad a neve jailbreaked device :)
Any questions?? Feel free to ask.