Sony Xperia XZ Premium owners started receiving the latest firmware update for their phones. The build number moves from 47.1.A.12.34 to 47.1.A.12.75 and brings February security update that fixes "Meltdown" and "Spectre" CPU vulnerabilities. Sony Xperia XZ Premium security update The new firmware is version 47.1.A.12.75 and it doesn't mention any other changes, so chances are you won't notice much difference in terms of user experience. The 120MB size also suggests no major changes. The upgrade is now seeding to dual-SIM phones, but single-SIM versions should be getting it...
Source: https://www.gsmarena.com/sony_xperia_xz_premium_patch_meltdown_spectre-news-29510.php
