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22h ago

Samsung Begins Global Stable One UI 8 Rollout on Galaxy S25 and Posts Timeline for Older Models

Beta users get a smaller first update as Samsung phases releases by region, with S, Z, A and Tab devices slated across October and November.

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Samsung Galaxy S25 review photos.
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Overview

  • Stable Android 16–based One UI 8 has moved beyond South Korea to India, Germany and the UK for the Galaxy S25 lineup, with a wider public release starting in additional countries, according to SamMobile.
  • The initial S25/S25+/S25 Ultra build for beta-enrolled devices is firmware S93xBXXU5BYI3 with the September 2025 security patch and an OTA of about 565 MB, per GSMArena.
  • Samsung published regional rollout schedules via posts in Korea and Brazil that map staggered dates for the Galaxy S24 family, Z Fold/Flip models, A‑series phones and Tab S devices through October and November, with timing varying by market.
  • One UI 8 adds deeper multimodal AI such as Gemini Live, Now Bar and Now Brief, plus features like Circle to Search and on‑device processing options, alongside security upgrades including Knox Enhanced Encrypted Protection and Knox Matrix.
  • SamMobile reports a One UI 8.5 firmware for the Galaxy S25 Ultra has been spotted on Samsung servers, signaling follow‑up development even as the 8.0 rollout continues.