As expected, Samsung is expanding the One UI 8.5 Beta Program to more models. New findings confirm that the One UI 8.5 Beta Program could soon be available for the Galaxy S24 series, Z Fold 6 and Z Flip 6 phones.

Galaxy S26 series debuted the stable One UI 8.5, yet Samsung is playing the Beta game. Instead of opening public rollout, the company plans to let users of the Galaxy S24 lineup, Z Fold 6, and Z Flip 6 test the One UI 8.5 Beta.

Firmware detective Tarun Vats spotted the first One UI 8.5 Beta builds for five Galaxy devices. It includes three models of the S24 lineup and two foldables. Emergence of public Beta builds suggests a Beta Program could launch soon.

First Beta builds (internal)

The first Beta build for Galaxy S24 Ultra is S928NKSU5ZZCB. Samsung also has firmware builds F956BXXU3ZZCB and F741BXXU3ZZCB in the pipeline for the Galaxy Z Fold 6 and Galaxy Z Flip 6, respectively.

Note that these are the very first builds that popped up on the server. There’s no guarantee these builds will only be provided as Beta 1. The last letters may change if Samsung makes changes to the software during internal testing.

Image: One UI 8.5 Beta builds spotted for S24 Ultra, Fold 6 and Flip 6

Galaxy S25 series was the first to join the Beta Program (in December). While everyone expected other models would directly jump to the official build, Samsung quietly expanded the Beta Program to the Z Fold 7 and Z Flip 7 (last week).

Internal testing of One UI 9 (built on Android 17) has also begun. Galaxy S26 series comes with One UI 8.5 preinstalled, making it the first contender for One UI 9 Beta Program. Enjoy the current software as Beta likely coming by May.

Update:

The first One UI 8.5 Beta build for Galaxy Z TriFold has also appeared (via Mohammed Khatri) on Samsung’s software server. Samsung’s just-discontinued phone could be eligible for Beta testing before shifting to the Stable build.

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Samsung has widened the rollout of its March 2026 update, now covering the Galaxy Z Fold 7, Flip 7, TriFold, Fold 6, Fold SE, and Flip 6.

The expansion follows the initial release for the Galaxy S25 series. Users in South Korea are lucky as they are getting priority access to the latest patch. Samsung is updating seven foldable phones in one go, with expansion following soon.

Software information

If you own a Galaxy Z Fold 7, Flip 7 FE or TriFold, the update comes with PDA build version ending with AZC1.

Owners of the Galaxy Z Flip 7 are getting the AZC2 build, which seems a little fresher than Fold 7, Flip 7 FE, and TriFold.

Foldables released in 2024 (Z Fold 6, Flip 6 and Fold SE) are getting the March patch with CZC1 release number.

What’s new in March 2026 update?

Samsung’s March update is equipped with over five dozen Android and One UI patches. It brings fixes for 60 CVE items from Google and 7 from Samsung.

One UI 8.5 update is on the verge of release as internal development of One UI 9 has begun, and the March patch has also started to arrive as the last OTA based on One UI 8.0.

Updated apps

Expect a few apps to be updated alongside the software update. Samsung usually tags new app builds in security updates to improve functionality. You can check more details on the changelog page after the phone fetches the update.

When to expect One UI 8.5?

Samsung will prioritize the Galaxy S25 series in Stable rollout. Galaxy Z Fold 7 and Z Flip 7 will be updated in the second wave. Meanwhile, older devices could be treated in a group once the stability is verified on newer models.

Expect the update for Galaxy S25 series and 2025 foldables by April, with older ones to follow by the end of April or early May.

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