Galaxy Jump4 SM-M366K updates & firmware
This page tracks every software update Samsung's update servers list for the Samsung Galaxy Jump4 (SM-M366K). The latest stable build is M366KKSU7DZJ5 (Android 17, feature update), first released on Oct 21, 2026. Samsung has published 12 stable builds for this model since Jun 19, 2025: 7 security and 5 feature updates, from Android 15 to Android 17. The current bootloader (binary) version is 7. A device on bit 7 only accepts firmware with bit 7 or higher – see downgrading and the bootloader bit.
Rollout: build M366KKSU7DZJ5 (Android 17 (One UI 9)) is live in all 1 regions, first released on Oct 21, 2026 in KTC (South Korea (KT)).
- Latest build
M366KKSU7DZJ5- Released
- Oct 21, 2026
- Android
- Android 17
- Bootloader bit
- 7
- Regions
- 1
- Stable builds
- 12
Update policy
Samsung has not published an update commitment for the Galaxy Jump4. According to our data it is on Android 17 (One UI 9), last build released Oct 21, 2026.
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 |
|---|---|---|---|---|---|
KTC | South Korea (KT) | M366KKSU7DZJ5 | Android 17 | Oct 21, 2026 | 12 |
Firmware history (12 builds)
Every stable build (PDA version) Samsung has published for the SM-M366K, 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 |
|---|---|---|---|---|---|---|
M366KKSU7DZJ5 | Oct 21, 2026 | Android 17 | Feature | 7 | 1 | on server |
M366KKSS7CZH1 | Aug 30, 2026 | Android 16 | Security | 7 | 1 | on server |
M366KKSS6CZG1 | Jul 19, 2026 | Android 16 | Security | 6 | 1 | on server |
M366KKSU5CZE3 | Jun 1, 2026 | Android 16 | Feature | 5 | 1 | on server |
M366KKSS5BZB2 | Mar 4, 2026 | Android 16 | Security | 5 | 1 | on server |
M366KKSS4BZA1 | Feb 2, 2026 | Android 16 | Security | 4 | 1 | on server |
M366KKSS3BYK3 | Nov 19, 2025 | Android 16 | Security | 3 | 1 | on server |
M366KKSS2BYI5 | Sep 30, 2025 | Android 16 | Security | 2 | 1 | on server |
M366KKSU2BYI4 | Sep 29, 2025 | Android 16 | Feature | 2 | 1 | on server |
M366KKSS2AYI1 | Sep 11, 2025 | Android 15 | Security | 2 | 1 | on server |
M366KKSU1AYF2 | Jun 24, 2025 | Android 15 | Feature | 1 | 1 | on server |
M366KKSU1AYF1 | Jun 19, 2025 | Android 15 | Feature | 1 | 1 | on server |
How to download SM-M366K 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-M366K -r KTCReplace KTC 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-M366K / KTC 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).