Galaxy Z Fold5 SM-F946U1 updates & firmware

This page tracks every software update Samsung's update servers list for the Samsung Galaxy Z Fold5 (SM-F946U1). The latest stable build is F946U1UEU8HZIJ (Android 17, feature update), first released on Oct 25, 2026. Samsung has published 45 stable builds for this model since Jul 31, 2023: 36 security and 9 feature updates, from Android 13 to Android 17. The current bootloader (binary) version is 8. A device on bit 8 only accepts firmware with bit 8 or higher – see downgrading and the bootloader bit.

Latest build

F946U1UEU8HZIJ

Released

Oct 25, 2026

Android

Android 17

Bootloader bit

8

Regions

14

Stable builds

45

Update policy

Samsung promised 4 major Android upgrades and 5 years of security updates for the Galaxy Z Fold5, counted from its launch in July 2023 with Android 13. That makes Android 17 (One UI 9) the last major version and security updates continue until about July 2028. It is already on Android 17 (One UI 9), its last promised major version – from here on it gets security updates only.

OS upgrades promised

4

Security updates

5 years

Last major version

Android 17 (One UI 9)

Security support until

July 2028

Current version

Android 17 (One UI 9)

Status

Supported

Source: Samsung. Samsung counts from the global launch and does not publish exact end dates; the dates above are launch month plus the promised years.

Compare all models: Samsung update policy by model.

Latest firmware by region (CSC)

Samsung builds firmware per region code (CSC). Pick the code that matches your device – it is shown under Settings › About phone › Software information › Service provider software version. Follow a code for its complete history.

Firmware history (45 builds)

Every stable build (PDA version) Samsung has published for the SM-F946U1, newest first. “Released” is the earliest date the build appeared on Samsung's servers in any region (how dates work). “pulled” means Samsung no longer serves the file for that build, usually because newer builds replaced it (details).

Beta and test builds

Samsung's servers also list 4 beta build(s) for this model. They are not offered to regular users and are often removed after the next stable release.

How to download SM-F946U1 firmware

We do not host firmware. Download it directly from Samsung's servers with a free open-source tool, for example samloader:

samloader download -m SM-F946U1 -r XAA

Replace XAA with your region code. Step-by-step instructions, including a graphical alternative: How to download Samsung firmware.

Changelog and security patch level

Samsung publishes the release notes for each update, including the security patch level, on its own site. They are listed per region – for example SM-F946U1 / XAA release notes on doc.samsungmobile.com. Each region page here links to the notes for that code. We don't show the patch level ourselves because Samsung's update servers don't report it (why).