i want remove information what can i do.
No, updating an iPod will not delete anything on your iPod.
Considering updating your iPhone forces you to update to the latest software available for the device, updating an iPhone 3GS now will update it to iOS 6.
Its where your backup information its stored just in case you didn't mean to delete a file or other personal things on you iPhone .
no, updating your ipod will update games and bugs on your ipod but leave music
You can't delete the Nike app because it comes with the iphone.
Yes, by plugging the iphone into your computer and updating the software on it using itunes.
you hit the delete button
Yes
No the data won't delete from the iPhone unless you reset everything
No
No