The Sony Xperia XZ Premium is started to receive the latest firmware update and it brings February security update that fixes “Meltdown” and “Spectre” CPU vulnerabilities.
The build number moves from 47.1.A.12.34 to 47.1.A.12.75, with 120MB in size. There is not much information in the change log. The upgrade pushed to the dual-SIM phones for now. The single-SIM versions will be getting the update shortly.