Share your experience!
I Have M2 Aqua..
My Region In Indonesia..
I have a problem when i update the Firmware To Lollipop From Kitkat...
After the update Successfully.. when the phone is on, i get the message on lock screen is "Invalid Card-Emergency Only"...
i have tried other sim card.. and still not change the problem..
I Move to the option -> Mobile Network .. ( It was not mobile data enable checbox ) just three option ( Data Roamin, Access Point Name & Network Mode ) ..
Help Me Please 
Repair the phone with PCC and check again, also you might want to get a brand new SIM card
Bridge (for Mac)
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355