Share your experience!
Hi
You could try connecting your phone to PC Companion and update your phone without deleting any data.
Download PC Companion and install it on your PC. Connect your phone and follow the instructions
How slow is your internet connection? it'll be wise to disable any antivirus and/or firewall on your PC
Bridge (for Mac)
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355