I was updating a colleagues iPhone 4 to the newest software and it wouldn't let me backup to iCloud as the iOS was so old, iCloud wasn't even an option. When I chose to update, it assured me that the contacts, calendar and messages would be preserved. Unfortunately, EVERYTHING was wiped! There is no other backup. Have been looking into 3rd party data recovery programs, but a lot of them require me to hold down the power button and the home button at the same time to allow access...and this is a problem because the power button on the phone doesn't work! Can anyone help?! I'm desperate and will try anything! I feel even worse because it wasn't my phone. Any advice welcome thanks in advance!