sony xperia sp wont update

[maj]

Hi, I have sony xperia sp c5303, which has been updated to 12.1.A.0.266.

      The website claims that 12.1.A.0.266 version is available for download, when I click on check for updates in my phone its says that latest software is already installed, I have checked by using sony PC companion as well, same problem. Can anyone suggest what is the priblem

[Alexander1]

Hi and welcome to the community! Since you're new please be sure that you have checked out our Discussion guidelines.

Our phone software are rolled out gradually. The latest available software versions may vary depending on market/region and network customizations. 

For more information, please see the following topic: 

http://talk.sonymobile.com/t5/FAQ/The-software-update-collection-topic/m-p/348066#U348066