i have upgraded itune to 10.6.1.7, whilst restart of itune asked for restore. my last back up was of 23.12.11. I lost my 6 months data - contacts, emails, SMS, notes, reminders all. it was so important data. It seems I am totally lost. how to restore all?

This is why you backup your data on a regular basis. We are in the year 2012. Backing up data should be common place now with everyone living on a digital world. There is nothing you can do unless you have a backup on iCloud, Google, etc.

What kind of computer are you using, Windows or Mac?

Mac- Click iTunes at the top of the screen next to the apple logo, click Preferences - Click devices tab- is there any more recent backups availalbe?

Windows- In ITunes -Click Edit - Preferences- Devices Tab- Are there any more recent backups?

If so, click ok on that pop up window.

On the left hand side of the screen, Right click on the iPhone under devices -click restore from backup select a more recent backup -click restore.

Wait...Check phone see what comes back