Update your software to benefit from

• Quick dial allows you to quickly find the number you are looking for
• Recent Apps button for clear overview of your applications
• Quick responses for incoming calls
• Optimized email application for multiple accounts
• Improved control of your mobile data consumption

Unfortunately, Sony hasn’t released updates for all models till now. Because of small differences in the software depending on the country and operator all phones have unique SI identifier. The SI is identified by an 8-digit number in the format XXXX-XXXX. To find this number please take off the back-cover and take out the battery. Under the battery you will find your SI number. 

If you find your Si in the released table, your update is released in PC Compulsory or Bridge for Mac. For successful update you need to dovnload the newest version of PC Compulsory. Find your version here! 

According to my experience, this update takes several minutes (about one hour). It mainly depends on internet speed.

Table is available here!