S901BXXSLGZA1 – Galaxy S22 firmware

Build S901BXXSLGZA1 is a security update for the Galaxy S22 (SM-S901B) on Android 16 (One UI 8). It first appeared on Samsung's servers on Jan 26, 2026 (method) and has reached 22 regions so far. It raises the bootloader bit from 20 to 21: once installed, the device no longer accepts firmware with bit 20 or lower, so a downgrade to S901BXXSKGYL3 is blocked. Samsung still serves this file.

Model
SM-S901B
Android
Android 16
Type
Security
Bootloader bit
21
First released
Jan 26, 2026
Regions
22

Rollout timeline by region

The date each region code (CSC) first received S901BXXSLGZA1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BOGFrance (Bouygues)Jan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
BTBUnited Kingdom (BT)Jan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
CAUCaucasusJan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
EVRUnited Kingdom (EE)Jan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
MEOPortugal (MEO)Jan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
MOBAustria (A1)Jan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
MOTSlovenia (Telekom)Jan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
MSRSerbiaJan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
O2CCzech Republic (O2)Jan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
PLSPoland (Plus)Jan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
PRTPoland (Play)Jan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
SEKUkraineJan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
SERRussiaJan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
SFRFrance (SFR)Jan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
SIMSlovenia (A1)Jan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
SKZKazakhstanJan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
SWCSwitzerlandJan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
TIMItaly (TIM)Jan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
TOPSerbia/MontenegroJan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
VIPCroatia (A1)Jan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
EUXEurope (Multi-CSC)Jan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1
EUYEurope (Multi-CSC)Jan 26, 2026day 0S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1

Download and release notes

samloader download -m SM-S901B -r EUX -v S901BXXSLGZA1/S901BOXMLGZA1/S901BXXSLGZA1

Samsung's release notes and security patch level for this update: SM-S901B / EUX on doc.samsungmobile.com. What each part of the build number means: decode S901BXXSLGZA1.