Samsung’s One UI 9 update has started reaching Galaxy S24 phones and unlocked Galaxy Z Fold6 and Galaxy Z Flip6 units in the US, following the rollout’s initial launch in South Korea. The update brings Android 17 and the September 2026 security patch to the supported devices.

Reports from US Galaxy owners indicate that Galaxy S24 devices purchased through AT&T and T-Mobile are beginning to receive the firmware over the air. Unlocked versions of Samsung’s two 2024 foldable phones are also included in the US rollout.

Galaxy S24 update details

The One UI 9 package for the Galaxy S24 series is close to 4GB, making a Wi-Fi connection or another fast network advisable before downloading it. After installation, the phones will run One UI 9 based on Android 17 and show the September 2026 security patch level.

For Galaxy S24 models, the new firmware version ends in EZIF. The rollout is reaching carrier-sold phones from AT&T and T-Mobile, although availability can vary by model and carrier account. Samsung typically distributes major software updates in stages, so the update may not appear for every eligible phone at the same time.

Fold6 and Flip6 firmware versions

Unlocked US versions of the Galaxy Z Fold6 and Galaxy Z Flip6 are receiving separate firmware builds. The Fold6 update is listed as F956U1UEU4EZIH, while the Flip6 update uses F741U1UEU4EZIH.

Both foldables receive the same underlying move to One UI 9 and Android 17. Owners can check for the update through the phone’s software update settings, though the large download means it is worth checking available storage and battery charge first.

When will One UI 9 reach other countries?

Samsung began this part of the One UI 9 rollout in South Korea before expanding it to the US. The update is expected to reach many other countries soon, but the available markets and timing may differ depending on the phone model, carrier and regional firmware.

The US expansion gives Galaxy S24 and 2024 foldable owners another indication that Samsung’s Android 17 update is moving beyond its first market. Users who do not yet see the download should continue checking periodically, since staged distribution can delay availability even within the same country or carrier.