Galaxy S24 SM-S921E firmware
The latest stable build is S921EXXS3DZJ1 (Android 17, security update), first released on Oct 26, 2026 – 11 days ago. Samsung has published 18 stable builds for this model since Jul 15, 2025: 14 security and 4 feature updates, from Android 15 to Android 17. The current bootloader (binary) version is 3. A device on bit 3 only accepts firmware with bit 3 or higher – see downgrading and the bootloader bit.
- Latest build
S921EXXS3DZJ1- Released
- Oct 26, 2026
- Android
- Android 17
- Bootloader bit
- 3
- Regions
- 1
- Stable builds
- 18
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 |
|---|---|---|---|---|---|
INS | India | S921EXXS3DZJ1 | Android 17 | Oct 26, 2026 | 18 |
Firmware history (18 builds)
Every stable build (PDA version) Samsung has published for the SM-S921E, newest first. “” is the earliest date the build appeared on Samsung's servers in any region. “” means Samsung no longer serves the file for that build.
| Build (PDA) | Released | Android | Type | Bit | Regions | File |
|---|---|---|---|---|---|---|
S921EXXS3DZJ1 | Oct 26, 2026 | Android 17 | Security | 3 | 1 | on server |
S921EXXU3DZIF | Oct 13, 2026 | Android 17 | Feature | 3 | 1 | on server |
S921EXXS3CZI1 | Oct 1, 2026 | Android 16 | Security | 3 | 1 | on server |
S921EXXS3CZH2 | Sep 1, 2026 | Android 16 | Security | 3 | 1 | on server |
S921EXXS3CZG1 | Jul 21, 2026 | Android 16 | Security | 3 | 1 | on server |
S921EXXS3CZF2 | Jun 24, 2026 | Android 16 | Security | 3 | 1 | on server |
S921EXXS3CZE1 | Jun 2, 2026 | Android 16 | Security | 3 | 1 | on server |
S921EXXU2CZDP | May 18, 2026 | Android 16 | Feature | 2 | 1 | on server |
S921EXXS2BZD2 | Apr 21, 2026 | Android 16 | Security | 2 | 1 | on server |
S921EXXS2BZC2 | Mar 31, 2026 | Android 16 | Security | 2 | 1 | on server |
S921EXXS2BZB2 | Mar 5, 2026 | Android 16 | Security | 2 | 1 | on server |
S921EXXS1BZA1 | Jan 27, 2026 | Android 16 | Security | 1 | 1 | on server |
S921EXXS1BYK8 | Dec 19, 2025 | Android 16 | Security | 1 | 1 | on server |
S921EXXS1BYK2 | Nov 24, 2025 | Android 16 | Security | 1 | 1 | on server |
S921EXXS1BYJ7 | Oct 30, 2025 | Android 16 | Security | 1 | 1 | on server |
S921EXXU1BYI6 | Sep 25, 2025 | Android 16 | Feature | 1 | 1 | on server |
S921EXXS1AYH1 | Aug 28, 2025 | Android 15 | Security | 1 | 1 | on server |
S921EXXU1AYF3 | Jul 15, 2025 | Android 15 | Feature | 1 | 1 | on server |
How to download SM-S921E 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-S921E -r INSReplace INS with your region code. Step-by-step instructions, including a graphical alternative:
How to download Samsung firmware.