Share your experience!
My xperia sl stop find the network after upgrading .. could you please find out and send me the solution.
Best regards;
That seems strange, have you tried to do a repair of the phone software?
Click on this link to get Sony PC companion:
http://www.sonymobile.com/gb/tools/pc-companion/
Start PC companion, start "Support Zone", start "Update phone software" and click on "Repair".
Follow the on-screen instructions.
Let me know if you are still having this issue after the repair of the phone software