Samsung SM-G998U1 Firmware Overview
What is the latest SM-G998U1 firmware?
G998U1UESJHZB1, released March 24, 2026 with Android 15. It is a security update on bootloader binary 19. 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-G998U1 still getting updates?
The last build arrived in March 2026. Updates have slowed down — models late in their support period move to quarterly or half-yearly security patches before they stop.
Can I downgrade the SM-G998U1 firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. All decodable builds in the archive share binary 19:
- Binary 19 — since Feb 2026
All SM-G998U1 firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
G998U1UESJHZB1
Security update
|
19 | PCT | 15 |
2026-03-24 | Download |
|
G998U1UESJHZB1
Security update
|
19 | TMB | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | TFN | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | SPR | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | XAS | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | AIO | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | USC | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | FKR | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | XAR | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | XAG | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | XAA | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | VZW | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | TMK | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | CHA | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | ATT | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | ACG | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | ATC | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | CCT | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | LRA | 15 |
2026-03-23 | Download |
|
G998U1UESJHZB1
Security update
|
19 | DSH | 15 |
2026-03-23 | Download |
Latest SM-G998U1 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 | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| AIO | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| ATC | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| ATT | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| CCT | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| CHA | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| DSH | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| FKR | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| LRA | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| PCT | G998U1UESJHZB1 | 19 | 15 | 2026-03-24 |
| SPR | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| TFN | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| TMB | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| TMK | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| USC | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| VZW | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| XAA | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| XAG | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| XAR | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| XAS | G998U1UESJHZB1 | 19 | 15 | 2026-03-23 |
How to Flash SM-G998U1 Firmware
Put the Samsung SM-G998U1 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 19 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.