Joe Maring / Android Authority
TL;DR
- Samsung has released the fifth One UI 8.5 beta (firmware ZZAN) for the Galaxy S25 series in several global regions.
- The update includes the February 5, 2026, security patch and an updated version of the Bixby assistant.
- This release arrives just weeks before the expected stable launch alongside the Galaxy S26 series.
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Tarun Vats reports on X that One UI 8.5 beta 5, with firmware version ending in ZZAN, is rolling out to Galaxy S25 series owners in South Korea, India, Germany, the UK, and the US.
This ZAN build is approximately 553MB in size and includes the February 5, 2026, security patch level. The changelog mentions that Samsung has applied the Bixby version update with this release.
Since this is a fresh release with a tiny changelog and small patch size, users haven’t noticed any new features. We’ll keep you updated when we find something new.
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