Samsung Galaxy S21+ 5G (SM-G996U1) Firmware Overview
What is the latest SM-G996U1 firmware?
G996U1UESJHZB1, 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).
Is the Samsung Galaxy S21+ 5G 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-G996U1 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-G996U1 firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
G996U1UESJHZB1
Security update
|
19 | PCT | 15 |
2026-03-24 | Download |
|
G996U1UESJHZB1
Security update
|
19 | AIO | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | ACG | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | XAR | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | XAA | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | VZW | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | USC | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | TMK | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | XAS | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | XAG | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | TMB | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | TFN | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | SPR | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | LRA | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | CHA | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | CCT | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | ATT | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | FKR | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | DSH | 15 |
2026-03-23 | Download |
|
G996U1UESJHZB1
Security update
|
19 | ATC | 15 |
2026-03-23 | Download |
Latest SM-G996U1 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 | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| AIO | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| ATC | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| ATT | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| CCT | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| CHA | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| DSH | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| FKR | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| LRA | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| PCT | G996U1UESJHZB1 | 19 | 15 | 2026-03-24 |
| SPR | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| TFN | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| TMB | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| TMK | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| USC | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| VZW | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| XAA | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| XAG | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| XAR | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
| XAS | G996U1UESJHZB1 | 19 | 15 | 2026-03-23 |
How to Flash SM-G996U1 Firmware
Put the Samsung Galaxy S21+ 5G 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.