G990B2XXSHIZA1 – Galaxy S21 FE 5G firmware

Build G990B2XXSHIZA1 is a security update for the Galaxy S21 FE 5G (SM-G990B2) on Android 16 (One UI 8). It first appeared on Samsung's servers on Jan 25, 2026 (method) and has reached 48 regions so far. It raises the bootloader bit from 16 to 17: once installed, the device no longer accepts firmware with bit 16 or lower, so a downgrade to G990B2XXSGIYK2 is blocked. Samsung still serves this file.

Model
SM-G990B2
Android
Android 16
Type
Security
Bootloader bit
17
First released
Jan 25, 2026
Regions
48

Rollout timeline by region

The date each region code (CSC) first received G990B2XXSHIZA1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
MOBAustria (A1)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
MOTSlovenia (Telekom)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
MSRSerbiaJan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
O2CCzech Republic (O2)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
O2UUnited Kingdom (O2)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
OMNItaly (Vodafone)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
OPVPoland (Orange)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
ORORomania (Orange)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
PLSPoland (Plus)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
PRTPoland (Play)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
SEKUkraineJan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
SERRussiaJan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
SFRFrance (SFR)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
SIMSlovenia (A1)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
SKZKazakhstanJan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
SWCSwitzerlandJan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
TCLPortugal (Vodafone)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
TIMItaly (TIM)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
TMHHungary (Telekom)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
TMSSlovakia (Telekom)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
TMZCzech Republic (T-Mobile)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
TNLNetherlands (T-Mobile)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
TOPSerbia/MontenegroJan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
TPLPoland (T-Mobile)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
VD2Germany (Vodafone)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
VDFNetherlands (Vodafone)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
VDIIreland (Vodafone)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
VGRGreece (Vodafone)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
VIPCroatia (A1)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
VODUnited Kingdom (Vodafone)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
XECSpain (Movistar)Jan 25, 2026day 0G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
TURTurkeyJan 26, 2026+1 dayG990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
3IEIreland (3)Jan 26, 2026+1 dayG990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
ATLSpain (Vodafone)Jan 26, 2026+1 dayG990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
BOGFrance (Bouygues)Jan 26, 2026+1 dayG990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
BTBUnited Kingdom (BT)Jan 26, 2026+1 dayG990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
CAUCaucasusJan 26, 2026+1 dayG990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
CNXRomania (Vodafone)Jan 26, 2026+1 dayG990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
COSGreece (Cosmote)Jan 26, 2026+1 dayG990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
CROCroatiaJan 26, 2026+1 dayG990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
DTMGermany (Telekom)Jan 26, 2026+1 dayG990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
EUXEurope (Multi-CSC)Jan 26, 2026+1 dayG990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
EUYEurope (Multi-CSC)Jan 26, 2026+1 dayG990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
EVRUnited Kingdom (EE)Jan 26, 2026+1 dayG990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
FTMFrance (Orange)Jan 26, 2026+1 dayG990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
H3GItaly (3)Jan 26, 2026+1 dayG990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
MEOPortugal (MEO)Jan 26, 2026+1 dayG990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1
INSIndiaJan 29, 2026+4 daysG990B2XXSHIZA1/G990B2ODMHIZA1/G990B2XXSHIZA1

Download and release notes

samloader download -m SM-G990B2 -r EUX -v G990B2XXSHIZA1/G990B2OXMHIZA1/G990B2XXSHIZA1

Samsung's release notes and security patch level for this update: SM-G990B2 / EUX on doc.samsungmobile.com. What each part of the build number means: decode G990B2XXSHIZA1.