I have an iPhone 4. I unplugged my phone during an update and have lost all pictures, text messages and videos from the last year. Is there any way to restore from a certain date to recover them?
If you have a current backup you can restore your phone to that backup. http://support.apple.com/kb/HT1766
As the first step in an update a backup is created. You should be able to restore that backup.
Retrieving data ...