Galaxy Z Fold7 SM-F966N updates & firmware
This page tracks every software update Samsung's update servers list for the Samsung Galaxy Z Fold7 (SM-F966N). The latest stable build is F966NKSSECZK1 (Android 17, security update), first released on Nov 11, 2026. Samsung has published 20 stable builds for this model since Jul 10, 2025: 13 security and 7 feature updates, from Android 16 to Android 17. The current bootloader (binary) version is 14. A device on bit 14 only accepts firmware with bit 14 or higher – see downgrading and the bootloader bit.
Rollout: build F966NKSSECZK1 (Android 17 (One UI 9)) is live in all 4 regions, first released on Nov 11, 2026 in KOO (South Korea).
- Latest build
F966NKSSECZK1- Released
- Nov 11, 2026
- Android
- Android 17
- Bootloader bit
- 14
- Regions
- 4
- Stable builds
- 20
Update policy
Samsung promised 7 major Android upgrades and 7 years of security updates for the Galaxy Z Fold7, counted from its launch in July 2025 with Android 16. That makes Android 23 the last major version and security updates continue until about July 2032. It is currently on Android 17 (One UI 9), so 6 major upgrades are still to come.
- OS upgrades promised
- 7
- Security updates
- 7 years
- Last major version
- Android 23
- Security support until
- July 2032
- Current version
- Android 17 (One UI 9)
- Status
- Supported
Source: reported by sammobile.com. 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.
| CSC | Region | Latest build | Android | Released | Builds |
|---|---|---|---|---|---|
KOO | South Korea | F966NKSSECZK1 | Android 17 | Nov 11, 2026 | 27 |
KTC | South Korea (KT) | F966NKSSECZK1 | Android 17 | Nov 11, 2026 | 27 |
LUC | South Korea (LG U+) | F966NKSSECZK1 | Android 17 | Nov 11, 2026 | 26 |
SKC | South Korea (SKT) | F966NKSSECZK1 | Android 17 | Nov 11, 2026 | 26 |
Firmware history (20 builds)
Every stable build (PDA version) Samsung has published for the SM-F966N, 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).
| Build (PDA) | Released | Android | Type | Bit | Regions | File |
|---|---|---|---|---|---|---|
F966NKSSECZK1 | Nov 11, 2026 | Android 17 | Security | 14 | 4 | on server |
F966NKSUDCZJ8 | Oct 26, 2026 | Android 17 | Feature | 13 | 4 | on server |
F966NKSUCCZIH | Sep 27, 2026 | Android 17 | Feature | 12 | 4 | on server |
F966NKSSCBZH3 | Aug 25, 2026 | Android 16 | Security | 12 | 4 | on server |
F966NKSSBBZG3 | Jul 8, 2026 | Android 16 | Security | 11 | 4 | on server |
F966NKSUABZF1 | Jun 10, 2026 | Android 16 | Feature | 10 | 4 | on server |
F966NKSSABZE1 | May 21, 2026 | Android 16 | Security | 10 | 4 | on server |
F966NKSU9BZDP | May 5, 2026 | Android 16 | Feature | 9 | 4 | on server |
F966NKSS9AZCS | Apr 7, 2026 | Android 16 | Security | 9 | 4 | on server |
F966NKSS8AZC1 | Mar 19, 2026 | Android 16 | Security | 8 | 4 | on server |
F966NKSS8AZB2 | Feb 22, 2026 | Android 16 | Security | 8 | 4 | on server |
F966NKSS7AYLT | Jan 13, 2026 | Android 16 | Security | 7 | 4 | on server |
F966NKSS6AYKE | Dec 8, 2025 | Android 16 | Security | 6 | 4 | on server |
F966NKSS6AYK9 | Nov 16, 2025 | Android 16 | Security | 6 | 4 | on server |
F966NKSS5AYJ3 | Oct 22, 2025 | Android 16 | Security | 5 | 4 | on server |
F966NKSS4AYI2 | Sep 30, 2025 | Android 16 | Security | 4 | 2 | on server |
F966NKSU4AYI1 | Sep 7, 2025 | Android 16 | Feature | 4 | 4 | on server |
F966NKSU3AYGH | Aug 10, 2025 | Android 16 | Feature | 3 | 4 | on server |
F966NKSS2AYG5 | Jul 21, 2025 | Android 16 | Security | 2 | 4 | on server |
F966NKSU1AYFL | Jul 10, 2025 | Android 16 | Feature | 1 | 4 | on server |
Beta and test builds
Samsung's servers also list 7 beta build(s) for this model. They are not offered to regular users and are often removed after the next stable release.
| Build | Listed | File |
|---|---|---|
F966NKSUCZZIF | Sep 18, 2026 | pulled |
F966NKSUCZZI6 | Sep 13, 2026 | pulled |
F966NKSUCZZHP | Sep 2, 2026 | pulled |
F966NKSU9ZZDD | Apr 19, 2026 | pulled |
F966NKSU9ZZD3 | Apr 12, 2026 | pulled |
F966NKSU8ZZCD | Mar 25, 2026 | pulled |
F966NKSU8ZZC5 | Mar 11, 2026 | pulled |
How to download SM-F966N 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-F966N -r KOOReplace KOO 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-F966N / KOO 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).