Samsung Galaxy S23 Ultra (SM-S918Q) Firmware Overview
What is the latest SM-S918Q firmware?
S918QOPU7FZK2, released November 3, 2026 with Android 17. It is a feature update on bootloader binary 7. The archive holds 19 official builds across 1 region (CSC). Each one is the full stock ROM (flash file) for Odin, not an OTA patch.
Is the Samsung Galaxy S23 Ultra still getting updates?
Yes. The newest build is from November 2026.
Which Android versions did it get?
The SM-S918Q builds in the archive run Android 13 to 17. The earliest build we have for each version:
- Android 17: S918QOPU7FZK2 (Nov 2026), 1 build in total
- Android 16: S918QOPU6DYJ3 (Nov 2025), 5 builds in total
- Android 15: S918QOPU6CYE8 (Jun 2025), 2 builds in total
- Android 14: S918QOPU2BWK2 (Dec 2023), 9 builds in total
- Android 13: S918QOPU2AWG2 (Jul 2023), 2 builds in total
Can I downgrade the SM-S918Q firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 2 to 7:
- Binary 7 — since Feb 2026
- Binary 6 — since May 2025
- Binary 5 — since Nov 2024
- Binary 4 — since Jun 2024
- Binary 3 — since May 2024
- Binary 2 — since Jul 2023
A phone already on binary 7 rejects builds with a lower binary in Odin ("SW REV CHECK FAIL"), so it can go back to an earlier Android version only if that version has a binary 7 build. How to read a build number.
All SM-S918Q firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
S918QOPU7FZK2
Feature update
|
7 | SJP | 17 |
2026-11-03 | Download |
|
S918QOPS7EZH1
Security update
|
7 | SJP | 16 |
2026-08-13 | Download |
|
S918QOPS7EZG1
Security update
|
7 | SJP | 16 |
2026-07-15 | Download |
|
S918QOPU7EZE2
Feature update
|
7 | SJP | 16 |
2026-05-08 | Download |
|
S918QOPS7DZB4
Security update
|
7 | SJP | 16 |
2026-03-13 | Download |
|
S918QOPU6DYJ3
Feature update
|
6 | SJP | 16 |
2025-11-13 | Download |
|
S918QOPS6CYH1
Security update
|
6 | SJP | 15 |
2025-09-02 | Download |
|
S918QOPU6CYE8
Feature update
|
6 | SJP | 15 |
2025-06-25 | Download |
|
S918QOPU5BYB1
Feature update
|
5 | SJP | 14 |
2025-03-12 | Download |
|
S918QOPS5BYA1
Security update
|
5 | SJP | 14 |
2025-02-05 | Download |
|
S918QOPU5BXK4
Feature update
|
5 | SJP | 14 |
2024-12-17 | Download |
|
S918QOPU4BXJ1
Feature update
|
4 | SJP | 14 |
2024-10-29 | Download |
|
S918QOPS4BXFC
Security update
|
4 | SJP | 14 |
2024-08-02 | Download |
|
S918QOPS3BXE3
Security update
|
3 | SJP | 14 |
2024-06-07 | Download |
|
S918QOPU2BXCH
Feature update
|
2 | SJP | 14 |
2024-04-16 | Download |
|
S918QOPS2BXA1
Security update
|
2 | SJP | 14 |
2024-02-13 | Download |
|
S918QOPU2BWK2
Feature update
|
2 | SJP | 14 |
2023-12-11 | Download |
|
S918QOPU2AWH7
Feature update
|
2 | SJP | 13 |
2023-09-08 | Download |
|
S918QOPU2AWG2
Feature update
|
2 | SJP | 13 |
2023-07-11 | Download |
How to Flash SM-S918Q Firmware
Put the Samsung Galaxy S23 Ultra 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 7 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.