G990B2XXSKIZH2 – Galaxy S21 FE 5G firmware

Build G990B2XXSKIZH2 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 Sep 17, 2026 (method) and has reached 48 regions so far. It raises the bootloader bit from 19 to 20: once installed, the device no longer accepts firmware with bit 19 or lower, so a downgrade to G990B2XXSJIZF1 is blocked. Samsung still serves this file.

Model
SM-G990B2
Android
Android 16
Type
Security
Bootloader bit
20
First released
Sep 17, 2026
Regions
48

Rollout timeline by region

The date each region code (CSC) first received G990B2XXSKIZH2, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
3IEIreland (3)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
ATLSpain (Vodafone)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
BOGFrance (Bouygues)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
BTBUnited Kingdom (BT)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
CAUCaucasusSep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
CNXRomania (Vodafone)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
COSGreece (Cosmote)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
CROCroatiaSep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
DTMGermany (Telekom)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
EUXEurope (Multi-CSC)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
EUYEurope (Multi-CSC)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
EVRUnited Kingdom (EE)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
FTMFrance (Orange)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
H3GItaly (3)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
MEOPortugal (MEO)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
MOBAustria (A1)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
MOTSlovenia (Telekom)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
MSRSerbiaSep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
O2CCzech Republic (O2)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
O2UUnited Kingdom (O2)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
OMNItaly (Vodafone)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
OPVPoland (Orange)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
ORORomania (Orange)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
PLSPoland (Plus)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
PRTPoland (Play)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
SEKUkraineSep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
SERRussiaSep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
SFRFrance (SFR)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
SIMSlovenia (A1)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
SKZKazakhstanSep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
SWCSwitzerlandSep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
TCLPortugal (Vodafone)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
TIMItaly (TIM)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
TMHHungary (Telekom)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
TMSSlovakia (Telekom)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
TMZCzech Republic (T-Mobile)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
TNLNetherlands (T-Mobile)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
TOPSerbia/MontenegroSep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
TPLPoland (T-Mobile)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
TURTurkeySep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
VD2Germany (Vodafone)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
VDFNetherlands (Vodafone)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
VDIIreland (Vodafone)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
VGRGreece (Vodafone)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
VIPCroatia (A1)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
VODUnited Kingdom (Vodafone)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
XECSpain (Movistar)Sep 17, 2026day 0G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1
INSIndiaSep 29, 2026+12 daysG990B2XXSKIZH2/G990B2ODMKIZH2/G990B2XXSKIZH1

Download and release notes

samloader download -m SM-G990B2 -r EUX -v G990B2XXSKIZH2/G990B2OXMKIZH2/G990B2XXSKIZH1

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 G990B2XXSKIZH2.