Samsung has begun rolling out the Samsung One UI 8.5 update to three midrange models: the Galaxy M55, the Galaxy A16 5G and the Galaxy A17 5G, with downloads available now in several countries.
The Galaxy M55 build arrives as firmware M556BXXU5DZE3, includes the May 2026 Android security patch and requires roughly a 3GB download; the M55 release is confirmed in India. The Galaxy A16 5G is receiving firmware A166PXXU7DZE2 — a roughly 2.3GB file — with rollouts in India and Indonesia. The Galaxy A17 5G build is A176BXXU5CZE9, about 2.4GB, and has started appearing in India, Nepal, France, Bulgaria and Vietnam.
Those three updates join a wider, ongoing One UI 8.5 rollout: the Galaxy A07 5G has started receiving the same release in Malaysia, the Philippines, Thailand, Taiwan and Vietnam, and Samsung’s distribution began with a first wave on May 6 and broader global releases from May 11.
One UI 8.5 brings refreshed UI visuals, a customizable Quick Panel, Direct Voicemail and several Galaxy S26 features being back-ported to older phones — the M55 specifically gains new camera filters. The update also includes an upgraded Bixby powered by Perplexity AI and is based on Android QPR2; each of the three packages carries the May 2026 security patch.
For owners, the immediate consequence is practical: expect multi-gigabyte downloads and a short setup after installation. Users in the listed markets should check Settings > Software update for the manual pull; Samsung’s staged rollout means availability can vary by carrier and region even when firmware numbers are live.
There is, however, a clear unanswered question in the rollout: Samsung has not confirmed whether several older flagships will be included. Some 2022 devices — notably the Galaxy S22, Galaxy Z Fold 4 and Galaxy Z Flip 4 — may not receive One UI 8.5, and that inconsistency has left owners of those phones waiting for clarity.
Separately, industry watchers have flagged a potential June 2026 follow-up for the Galaxy S25 series. Leaker Tarun Vats identified a possible June One UI 8.5 update that could add Priority Notifications and Summarize Notifications — AI tools introduced on the Galaxy S26 that rank important alerts and condense chats without opening apps — but Samsung has not officially confirmed that schedule or feature set.
The practical next step for readers is simple and immediate: if you own a Galaxy M55, A16 5G or A17 5G, run a manual check in Settings > Software update and prepare for a multi-gigabyte download. For owners of older flagships, the more consequential question is whether Samsung will extend S26 notification tools and One UI 8.5 to those devices in June; until Samsung issues an official list or timing, that remains the rollout’s central unknown.
