Samsung SM-S921Q Firmware Overview
What is the latest SM-S921Q firmware?
S921QOPS1DZH1, released August 12, 2026 with Android 16. It is a security update on bootloader binary 1. The archive holds 15 official builds across 1 region (CSC). Each one is the full stock ROM (flash file) for Odin, not an OTA patch.
Is the Samsung SM-S921Q still getting updates?
Yes. The newest build is from August 2026.
Which Android versions did it get?
The SM-S921Q builds in the archive run Android 14 to 16. The earliest build we have for each version:
- Android 16: S921QOPU1CYJ3 (Nov 2025), 7 builds in total
- Android 15: S921QOPU1BYE3 (Jun 2025), 3 builds in total
- Android 14: S921QOPU1AXCD (Mar 2024), 5 builds in total
Can I downgrade the SM-S921Q firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. All decodable builds in the archive share binary 1:
- Binary 1 — since Mar 2024
All SM-S921Q firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
S921QOPS1DZH1
Security update
|
1 | SJP | 16 |
2026-08-12 | Download |
|
S921QOPS1DZG1
Security update
|
1 | SJP | 16 |
2026-07-14 | Download |
|
S921QOPU1DZDP
Feature update
|
1 | SJP | 16 |
2026-04-29 | Download |
|
S921QOPS1CZB4
Security update
|
1 | SJP | 16 |
2026-03-13 | Download |
|
S921QOPS1CZA1
Security update
|
1 | SJP | 16 |
2026-02-13 | Download |
|
S921QOPU1CYK7
Feature update
|
1 | SJP | 16 |
2025-12-01 | Download |
|
S921QOPU1CYJ3
Feature update
|
1 | SJP | 16 |
2025-11-07 | Download |
|
S921QOPS1BYI1
Security update
|
1 | SJP | 15 |
2025-09-29 | Download |
|
S921QOPS1BYG1
Security update
|
1 | SJP | 15 |
2025-08-04 | Download |
|
S921QOPU1BYE3
Feature update
|
1 | SJP | 15 |
2025-06-12 | Download |
|
S921QOPS1AYA2
Security update
|
1 | SJP | 14 |
2025-02-12 | Download |
|
S921QOPU1AXK7
Feature update
|
1 | SJP | 14 |
2024-11-27 | Download |
|
S921QOPS1AXJ2
Security update
|
1 | SJP | 14 |
2024-10-10 | Download |
|
S921QOPS1AXE1
Security update
|
1 | SJP | 14 |
2024-05-30 | Download |
|
S921QOPU1AXCD
Feature update
|
1 | SJP | 14 |
2024-03-26 | Download |
How to Flash SM-S921Q Firmware
Put the Samsung SM-S921Q into Download Mode, load the BL, AP, CP and CSC files into Odin on a Windows PC and press Start. Pick a build with Bit 1 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.