Samsung Galaxy S26 Ultra (SM-S948B) Firmware Overview
What is the latest SM-S948B firmware?
S948BXXS4BZIG, released September 24, 2026 with Android 17. It is a security update on bootloader binary 4. The archive holds 139 official builds across 76 regions (CSC).
Is the Samsung Galaxy S26 Ultra still getting updates?
Yes. The newest build is from September 2026, and 35 of 76 regions already have a build from that month; the rest usually follow within a few weeks.
Which Android versions did it get?
The SM-S948B builds in the archive run Android 16 to 17. The earliest build we have for each version:
- Android 17: S948BXXS4BZIG (Sep 2026), 35 builds in total
- Android 16: S948BXXS1AZC7 (Mar 2026), 104 builds in total
Can I downgrade the SM-S948B firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 1 to 4:
- Binary 4 — since Jul 2026
- Binary 3 — since Jun 2026
- Binary 2 — since Apr 2026
- Binary 1 — since Mar 2026
A phone already on binary 4 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 4 build. How to read a build number.
All SM-S948B firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
S948BXXS4BZIG
Security update
|
4 | EON | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | ECO | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | TCE | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | MXO | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | IUS | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | ZTO | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | ZVV | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | ZTA | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | GTO | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | UFN | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | UYO | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | PSN | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | ARO | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | CDR | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | CTI | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | CTU | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | GLO | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | PEO | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | COO | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | COB | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | BVO | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | ZTM | 17 |
2026-09-24 | Download |
|
S948BXXS4BZIG
Security update
|
4 | XID | 17 |
2026-09-23 | Download |
|
S948BXXS4BZIG
Security update
|
4 | THL | 17 |
2026-09-23 | Download |
|
S948BXXS4BZIG
Security update
|
4 | XSA | 17 |
2026-09-23 | Download |
|
S948BXXS4BZIG
Security update
|
4 | PLS | 17 |
2026-09-23 | Download |
|
S948BXXS4BZIG
Security update
|
4 | MOB | 17 |
2026-09-23 | Download |
|
S948BXXS4BZIG
Security update
|
4 | NPB | 17 |
2026-09-23 | Download |
|
S948BXXS4BZIG
Security update
|
4 | EUY | 17 |
2026-09-23 | Download |
|
S948BXXS4BZIG
Security update
|
4 | MWD | 17 |
2026-09-23 | Download |
|
S948BXXS4BZIG
Security update
|
4 | TUR | 17 |
2026-09-23 | Download |
|
S948BXXS4BZIG
Security update
|
4 | XSG | 17 |
2026-09-23 | Download |
|
S948BXXS4BZIG
Security update
|
4 | SOZ | 17 |
2026-09-23 | Download |
|
S948BXXS4BZIG
Security update
|
4 | SER | 17 |
2026-09-23 | Download |
|
S948BXXS4BZIG
Security update
|
4 | XFA | 17 |
2026-09-23 | Download |
|
S948BXXS4AZHM
Security update
|
4 | ZVV | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | SFR | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | SWC | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | BKD | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | XNZ | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | THL | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | STH | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | SIN | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | MM1 | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | XSA | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHM
Security update
|
4 | TCE | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHM
Security update
|
4 | GTO | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | SIM | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | GLB | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | ILP | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | LYS | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | KSA | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | MID | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | XXV | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | SOZ | 16 |
2026-08-26 | Download |
|
S948BXXS4AZHL
Security update
|
4 | XID | 16 |
2026-08-26 | Download |
|
S948BXXS4AZG5
Security update
|
4 | KSA | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG6
Security update
|
4 | CTI | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG5
Security update
|
4 | LYS | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG6
Security update
|
4 | CTP | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG6
Security update
|
4 | CHO | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG6
Security update
|
4 | CHE | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG6
Security update
|
4 | BVO | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG6
Security update
|
4 | CHL | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG5
Security update
|
4 | TUR | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG6
Security update
|
4 | CTU | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG6
Security update
|
4 | CHT | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG5
Security update
|
4 | XME | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG5
Security update
|
4 | MWD | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG6
Security update
|
4 | COM | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG5
Security update
|
4 | NPB | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG5
Security update
|
4 | SER | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG5
Security update
|
4 | XSG | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG6
Security update
|
4 | PNT | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG5
Security update
|
4 | AFR | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG5
Security update
|
4 | XFA | 16 |
2026-07-02 | Download |
|
S948BXXS4AZG5
Security update
|
4 | XTC | 16 |
2026-07-02 | Download |
|
S948BXXS3AZF4
Security update
|
3 | XID | 16 |
2026-06-15 | Download |
|
S948BXXS3AZF2
Security update
|
3 | EON | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF2
Security update
|
3 | CRC | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF2
Security update
|
3 | CTI | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF2
Security update
|
3 | PET | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF2
Security update
|
3 | TCE | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF2
Security update
|
3 | PSP | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF1
Security update
|
3 | CAU | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF1
Security update
|
3 | PRT | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF1
Security update
|
3 | SIN | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF1
Security update
|
3 | STH | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF1
Security update
|
3 | THL | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF1
Security update
|
3 | MM1 | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF2
Security update
|
3 | CGU | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF2
Security update
|
3 | UPO | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF1
Security update
|
3 | PLS | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF1
Security update
|
3 | XSA | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF1
Security update
|
3 | AFG | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF2
Security update
|
3 | ECO | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF2
Security update
|
3 | CTU | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF2
Security update
|
3 | DOR | 16 |
2026-06-01 | Download |
|
S948BXXS3AZF2
Security update
|
3 | CTP | 16 |
2026-06-01 | Download |
|
S948BXXS2AZE2
Security update
|
2 | SFR | 16 |
2026-05-18 | Download |
|
S948BXXS2AZE2
Security update
|
2 | PRT | 16 |
2026-05-18 | Download |
|
S948BXXS2AZE2
Security update
|
2 | PLS | 16 |
2026-05-18 | Download |
|
S948BXXS2AZE2
Security update
|
2 | MOB | 16 |
2026-05-18 | Download |
|
S948BXXS2AZE2
Security update
|
2 | SWC | 16 |
2026-05-18 | Download |
|
S948BXXS2AZE2
Security update
|
2 | SIM | 16 |
2026-05-18 | Download |
|
S948BXXS2AZE2
Security update
|
2 | EUY | 16 |
2026-05-18 | Download |
|
S948BXXS2AZE2
Security update
|
2 | BOG | 16 |
2026-05-18 | Download |
|
S948BXXU2AZDE
Feature update
|
2 | XFV | 16 |
2026-05-13 | Download |
|
S948BXXU2AZDE
Feature update
|
2 | XFA | 16 |
2026-05-13 | Download |
|
S948BXXU2AZDI
Feature update
|
2 | CHT | 16 |
2026-05-12 | Download |
|
S948BXXU2AZDI
Feature update
|
2 | CHO | 16 |
2026-05-12 | Download |
|
S948BXXU2AZDI
Feature update
|
2 | CHL | 16 |
2026-05-12 | Download |
|
S948BXXU2AZDI
Feature update
|
2 | CHE | 16 |
2026-05-12 | Download |
|
S948BXXU2AZDI
Feature update
|
2 | BVO | 16 |
2026-05-12 | Download |
|
S948BXXS2AZE3
Security update
|
2 | PEO | 16 |
2026-05-11 | Download |
|
S948BXXS2AZE3
Security update
|
2 | IUS | 16 |
2026-05-11 | Download |
|
S948BXXS2AZE3
Security update
|
2 | PGU | 16 |
2026-05-11 | Download |
|
S948BXXS2AZE3
Security update
|
2 | PNT | 16 |
2026-05-11 | Download |
|
S948BXXS2AZE3
Security update
|
2 | PSN | 16 |
2026-05-11 | Download |
|
S948BXXS1AZC7
Security update
|
1 | ZVV | 16 |
2026-03-13 | Download |
|
S948BXXS1AZC7
Security update
|
1 | ZTO | 16 |
2026-03-13 | Download |
|
S948BXXS1AZC7
Security update
|
1 | ZTM | 16 |
2026-03-13 | Download |
|
S948BXXS1AZC7
Security update
|
1 | ZTA | 16 |
2026-03-13 | Download |
|
S948BXXS1AZC7
Security update
|
1 | UYO | 16 |
2026-03-13 | Download |
|
S948BXXS1AZC7
Security update
|
1 | UFN | 16 |
2026-03-13 | Download |
|
S948BXXS1AZC7
Security update
|
1 | TGP | 16 |
2026-03-13 | Download |
|
S948BXXS1AZC7
Security update
|
1 | PSN | 16 |
2026-03-13 | Download |
|
S948BXXS1AZC7
Security update
|
1 | PGU | 16 |
2026-03-13 | Download |
|
S948BXXS1AZC7
Security update
|
1 | GLO | 16 |
2026-03-13 | Download |
|
S948BXXS1AZC7
Security update
|
1 | ILP | 16 |
2026-03-11 | Download |
|
S948BXXS1AZC7
Security update
|
1 | ILO | 16 |
2026-03-11 | Download |
|
S948BXXS1AZC7
Security update
|
1 | XTC | 16 |
2026-03-10 | Download |
|
S948BXXS1AZC7
Security update
|
1 | GLB | 16 |
2026-03-10 | Download |
|
S948BXXS1AZC7
Security update
|
1 | XSP | 16 |
2026-03-10 | Download |
|
S948BXXS1AZC7
Security update
|
1 | EUX | 16 |
2026-03-10 | Download |
|
S948BXXS1AZC7
Security update
|
1 | BOG | 16 |
2026-03-10 | Download |
|
S948BXXS1AZC7
Security update
|
1 | XXV | 16 |
2026-03-10 | Download |
|
S948BXXS1AZC7
Security update
|
1 | CAU | 16 |
2026-03-10 | Download |
|
S948BXXS1AZC7
Security update
|
1 | CAC | 16 |
2026-03-10 | Download |
Latest SM-S948B 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 |
|---|---|---|---|---|
| AFG | S948BXXS3AZF1 | 3 | 16 | 2026-06-01 |
| AFR | S948BXXS4AZG5 | 4 | 16 | 2026-07-02 |
| ARO | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| BKD | S948BXXS4AZHL | 4 | 16 | 2026-08-26 |
| BOG | S948BXXS2AZE2 | 2 | 16 | 2026-05-18 |
| BVO | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| CAC | S948BXXS1AZC7 | 1 | 16 | 2026-03-10 |
| CAU | S948BXXS3AZF1 | 3 | 16 | 2026-06-01 |
| CDR | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| CGU | S948BXXS3AZF2 | 3 | 16 | 2026-06-01 |
| CHE | S948BXXS4AZG6 | 4 | 16 | 2026-07-02 |
| CHL | S948BXXS4AZG6 | 4 | 16 | 2026-07-02 |
| CHO | S948BXXS4AZG6 | 4 | 16 | 2026-07-02 |
| CHT | S948BXXS4AZG6 | 4 | 16 | 2026-07-02 |
| COB | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| COM | S948BXXS4AZG6 | 4 | 16 | 2026-07-02 |
| COO | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| CRC | S948BXXS3AZF2 | 3 | 16 | 2026-06-01 |
| CTI | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| CTP | S948BXXS4AZG6 | 4 | 16 | 2026-07-02 |
| CTU | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| DOR | S948BXXS3AZF2 | 3 | 16 | 2026-06-01 |
| ECO | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| EON | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| EUX | S948BXXS1AZC7 | 1 | 16 | 2026-03-10 |
| EUY | S948BXXS4BZIG | 4 | 17 | 2026-09-23 |
| GLB | S948BXXS4AZHL | 4 | 16 | 2026-08-26 |
| GLO | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| GTO | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| ILO | S948BXXS1AZC7 | 1 | 16 | 2026-03-11 |
| ILP | S948BXXS4AZHL | 4 | 16 | 2026-08-26 |
| IUS | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| KSA | S948BXXS4AZHL | 4 | 16 | 2026-08-26 |
| LYS | S948BXXS4AZHL | 4 | 16 | 2026-08-26 |
| MID | S948BXXS4AZHL | 4 | 16 | 2026-08-26 |
| MM1 | S948BXXS4AZHL | 4 | 16 | 2026-08-26 |
| MOB | S948BXXS4BZIG | 4 | 17 | 2026-09-23 |
| MWD | S948BXXS4BZIG | 4 | 17 | 2026-09-23 |
| MXO | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| NPB | S948BXXS4BZIG | 4 | 17 | 2026-09-23 |
| PEO | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| PET | S948BXXS3AZF2 | 3 | 16 | 2026-06-01 |
| PGU | S948BXXS2AZE3 | 2 | 16 | 2026-05-11 |
| PLS | S948BXXS4BZIG | 4 | 17 | 2026-09-23 |
| PNT | S948BXXS4AZG6 | 4 | 16 | 2026-07-02 |
| PRT | S948BXXS3AZF1 | 3 | 16 | 2026-06-01 |
| PSN | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| PSP | S948BXXS3AZF2 | 3 | 16 | 2026-06-01 |
| SER | S948BXXS4BZIG | 4 | 17 | 2026-09-23 |
| SFR | S948BXXS4AZHL | 4 | 16 | 2026-08-26 |
| SIM | S948BXXS4AZHL | 4 | 16 | 2026-08-26 |
| SIN | S948BXXS4AZHL | 4 | 16 | 2026-08-26 |
| SOZ | S948BXXS4BZIG | 4 | 17 | 2026-09-23 |
| STH | S948BXXS4AZHL | 4 | 16 | 2026-08-26 |
| SWC | S948BXXS4AZHL | 4 | 16 | 2026-08-26 |
| TCE | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| TGP | S948BXXS1AZC7 | 1 | 16 | 2026-03-13 |
| THL | S948BXXS4BZIG | 4 | 17 | 2026-09-23 |
| TUR | S948BXXS4BZIG | 4 | 17 | 2026-09-23 |
| UFN | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| UPO | S948BXXS3AZF2 | 3 | 16 | 2026-06-01 |
| UYO | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| XFA | S948BXXS4BZIG | 4 | 17 | 2026-09-23 |
| XFV | S948BXXU2AZDE | 2 | 16 | 2026-05-13 |
| XID | S948BXXS4BZIG | 4 | 17 | 2026-09-23 |
| XME | S948BXXS4AZG5 | 4 | 16 | 2026-07-02 |
| XNZ | S948BXXS4AZHL | 4 | 16 | 2026-08-26 |
| XSA | S948BXXS4BZIG | 4 | 17 | 2026-09-23 |
| XSG | S948BXXS4BZIG | 4 | 17 | 2026-09-23 |
| XSP | S948BXXS1AZC7 | 1 | 16 | 2026-03-10 |
| XTC | S948BXXS4AZG5 | 4 | 16 | 2026-07-02 |
| XXV | S948BXXS4AZHL | 4 | 16 | 2026-08-26 |
| ZTA | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| ZTM | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| ZTO | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
| ZVV | S948BXXS4BZIG | 4 | 17 | 2026-09-24 |
How to Flash SM-S948B Firmware
Put the Samsung Galaxy S26 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 4 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.