G990B2XXSGIYK2 – Galaxy S21 FE 5G firmware

Build G990B2XXSGIYK2 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 Dec 15, 2025 (method) and has reached 48 regions so far. It keeps bootloader bit 16, so downgrading to the previous build G990B2XXSGIYK1 is still possible. Samsung still serves this file.

Model
SM-G990B2
Android
Android 16
Type
Security
Bootloader bit
16
First released
Dec 15, 2025
Regions
48

Rollout timeline by region

The date each region code (CSC) first received G990B2XXSGIYK2, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
3IEIreland (3)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
ATLSpain (Vodafone)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
BOGFrance (Bouygues)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
BTBUnited Kingdom (BT)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
CAUCaucasusDec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
CNXRomania (Vodafone)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
COSGreece (Cosmote)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
CROCroatiaDec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
DTMGermany (Telekom)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
EUXEurope (Multi-CSC)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
EUYEurope (Multi-CSC)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
EVRUnited Kingdom (EE)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
FTMFrance (Orange)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
H3GItaly (3)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
MEOPortugal (MEO)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
MOBAustria (A1)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
MOTSlovenia (Telekom)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
MSRSerbiaDec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
O2CCzech Republic (O2)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
O2UUnited Kingdom (O2)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
OMNItaly (Vodafone)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
OPVPoland (Orange)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
ORORomania (Orange)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
PLSPoland (Plus)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
PRTPoland (Play)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
SEKUkraineDec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
SERRussiaDec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
SFRFrance (SFR)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
SIMSlovenia (A1)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
SKZKazakhstanDec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
SWCSwitzerlandDec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
TCLPortugal (Vodafone)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
TIMItaly (TIM)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
TMHHungary (Telekom)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
TMSSlovakia (Telekom)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
TMZCzech Republic (T-Mobile)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
TNLNetherlands (T-Mobile)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
TOPSerbia/MontenegroDec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
TPLPoland (T-Mobile)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
TURTurkeyDec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
VD2Germany (Vodafone)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
VDFNetherlands (Vodafone)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
VDIIreland (Vodafone)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
VGRGreece (Vodafone)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
VIPCroatia (A1)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
VODUnited Kingdom (Vodafone)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
XECSpain (Movistar)Dec 15, 2025day 0G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1
INSIndiaDec 18, 2025+3 daysG990B2XXSGIYK2/G990B2ODMGIYK1/G990B2XXSGIYK1

Download and release notes

samloader download -m SM-G990B2 -r EUX -v G990B2XXSGIYK2/G990B2OXMGIYK2/G990B2XXSGIYK1

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 G990B2XXSGIYK2.