Samsung SM-S911U1 Firmware Overview
What is the latest SM-S911U1 firmware?
S911U1UEU8GZIF, released October 2, 2026 with Android 17. It is a feature update on bootloader binary 8. The archive holds 20 official builds across 20 regions (CSC). Each one is the full stock ROM (flash file) for Odin, not an OTA patch.
Is the Samsung SM-S911U1 still getting updates?
Yes. The newest build is from October 2026, and 2 of 20 regions already have a build from that month; the rest usually follow within a few weeks.
Can I downgrade the SM-S911U1 firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. All decodable builds in the archive share binary 8:
- Binary 8 — since Sep 2026
All SM-S911U1 firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
S911U1UEU8GZIF
Feature update
|
8 | PCT | 17 |
2026-10-02 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | LLA | 17 |
2026-10-02 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | XAG | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | LRA | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | ATC | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | DSA | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | ACG | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | CCT | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | CHA | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | FKR | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | DSH | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | TFN | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | VZW | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | AIO | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | USC | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | ATT | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | XAA | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | XAR | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | TMK | 17 |
2026-09-29 | Download |
|
S911U1UEU8GZIF
Feature update
|
8 | TMB | 17 |
2026-09-29 | Download |
Latest SM-S911U1 Firmware by Region
The newest build for each region (CSC) code. Not sure which region your phone uses? See the CSC code guide.
| Region | Latest build | Bit | Android | Date |
|---|---|---|---|---|
| ACG | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| AIO | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| ATC | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| ATT | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| CCT | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| CHA | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| DSA | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| DSH | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| FKR | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| LLA | S911U1UEU8GZIF | 8 | 17 | 2026-10-02 |
| LRA | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| PCT | S911U1UEU8GZIF | 8 | 17 | 2026-10-02 |
| TFN | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| TMB | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| TMK | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| USC | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| VZW | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| XAA | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| XAG | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
| XAR | S911U1UEU8GZIF | 8 | 17 | 2026-09-29 |
How to Flash SM-S911U1 Firmware
Put the Samsung SM-S911U1 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 8 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.