A266BXXSCCZH3 – Galaxy A26 5G firmware

Build A266BXXSCCZH3 is a security update for the Galaxy A26 5G (SM-A266B) on Android 16 (One UI 8). It first appeared on Samsung's servers on Aug 26, 2026 (method) and has reached 46 regions so far. It raises the bootloader bit from 11 to 12: once installed, the device no longer accepts firmware with bit 11 or lower, so a downgrade to A266BXXSBCZG4 is blocked. Samsung still serves this file.

Model
SM-A266B
Android
Android 16
Type
Security
Bootloader bit
12
First released
Aug 26, 2026
Regions
46

Rollout timeline by region

The date each region code (CSC) first received A266BXXSCCZH3, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
XXVVietnamAug 26, 2026day 0A266BXXSCCZH3/A266BOLMCCZH3/A266BXXSCCZH3
BOGFrance (Bouygues)Aug 30, 2026+4 daysA266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3
EUXEurope (Multi-CSC)Aug 30, 2026+4 daysA266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3
EUYEurope (Multi-CSC)Aug 30, 2026+4 daysA266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3
MEOPortugal (MEO)Aug 30, 2026+4 daysA266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3
MOTSlovenia (Telekom)Aug 30, 2026+4 daysA266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3
MSRSerbiaAug 30, 2026+4 daysA266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3
PLSPoland (Plus)Aug 30, 2026+4 daysA266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3
PRTPoland (Play)Aug 30, 2026+4 daysA266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3
SFRFrance (SFR)Aug 30, 2026+4 daysA266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3
SIMSlovenia (A1)Aug 30, 2026+4 daysA266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3
SWCSwitzerlandAug 30, 2026+4 daysA266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3
TOPSerbia/MontenegroAug 30, 2026+4 daysA266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3
TURTurkeyAug 30, 2026+4 daysA266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3
VIPCroatia (A1)Aug 30, 2026+4 daysA266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3
CAUCaucasusSep 6, 2026+11 daysA266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3
SKZKazakhstanSep 6, 2026+11 daysA266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3
BRITaiwanSep 6, 2026+11 daysA266BXXSCCZH3/A266BOLMCCZH3/A266BXXSCCZH3
GLBPhilippines (Globe)Sep 6, 2026+11 daysA266BXXSCCZH3/A266BOLMCCZH3/A266BXXSCCZH3
MM1Singapore (M1)Sep 6, 2026+11 daysA266BXXSCCZH3/A266BOLMCCZH3/A266BXXSCCZH3
SINSingapore (Singtel)Sep 6, 2026+11 daysA266BXXSCCZH3/A266BOLMCCZH3/A266BXXSCCZH3
STHSingapore (StarHub)Sep 6, 2026+11 daysA266BXXSCCZH3/A266BOLMCCZH3/A266BXXSCCZH3
THLThailandSep 6, 2026+11 daysA266BXXSCCZH3/A266BOLMCCZH3/A266BXXSCCZH3
XIDIndonesiaSep 6, 2026+11 daysA266BXXSCCZH3/A266BOLMCCZH3/A266BXXSCCZH3
XMEMalaysiaSep 6, 2026+11 daysA266BXXSCCZH3/A266BOLMCCZH3/A266BXXSCCZH3
XNZNew ZealandSep 6, 2026+11 daysA266BXXSCCZH3/A266BOLMCCZH3/A266BXXSCCZH3
XSAAustraliaSep 6, 2026+11 daysA266BXXSCCZH3/A266BOLMCCZH3/A266BXXSCCZH3
XSPSingaporeSep 6, 2026+11 daysA266BXXSCCZH3/A266BOLMCCZH3/A266BXXSCCZH3
XTCPhilippinesSep 6, 2026+11 daysA266BXXSCCZH3/A266BOLMCCZH3/A266BXXSCCZH3
ACRGhanaSep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3
AFGAfghanistanSep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3
AFRAfricaSep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3
DKRSenegalSep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3
ECTNigeriaSep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3
EGYEgyptSep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3
ILOIsraelSep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3
KSASaudi ArabiaSep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3
LYSLibyaSep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3
MIDMiddle EastSep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3
MWDMoroccoSep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3
PAKPakistanSep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3
PKDPakistanSep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3
TUNTunisiaSep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3
XFASouth AfricaSep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3
XFVSouth Africa (Vodacom)Sep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3
XSGUnited Arab EmiratesSep 7, 2026+12 daysA266BXXSCCZH3/A266BOJMCCZH3/A266BXXSCCZH3

Download and release notes

samloader download -m SM-A266B -r EUX -v A266BXXSCCZH3/A266BOXMCCZH3/A266BXXSCCZH3

Samsung's release notes and security patch level for this update: SM-A266B / EUX on doc.samsungmobile.com. What each part of the build number means: decode A266BXXSCCZH3.