A366BXXSBCZG1 – Galaxy A36 5G firmware

Build A366BXXSBCZG1 is a security update for the Galaxy A36 5G (SM-A366B) on Android 16 (One UI 8). It first appeared on Samsung's servers on Aug 2, 2026 (method) and has reached 44 regions so far. It raises the bootloader bit from 10 to 11: once installed, the device no longer accepts firmware with bit 10 or lower, so a downgrade to A366BXXSACZF1 is blocked. Samsung still serves this file.

Model
SM-A366B
Android
Android 16
Type
Security
Bootloader bit
11
First released
Aug 2, 2026
Regions
44

Rollout timeline by region

The date each region code (CSC) first received A366BXXSBCZG1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACRGhanaAug 2, 2026day 0A366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1
AFGAfghanistanAug 2, 2026day 0A366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1
AFRAfricaAug 2, 2026day 0A366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1
DKRSenegalAug 2, 2026day 0A366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1
ECTNigeriaAug 2, 2026day 0A366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1
EGYEgyptAug 2, 2026day 0A366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1
GLBPhilippines (Globe)Aug 2, 2026day 0A366BXXSBCZG1/A366BOLMBCZG1/A366BXXSBCZG1
KSASaudi ArabiaAug 2, 2026day 0A366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1
LYSLibyaAug 2, 2026day 0A366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1
MIDMiddle EastAug 2, 2026day 0A366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1
MM1Singapore (M1)Aug 2, 2026day 0A366BXXSBCZG1/A366BOLMBCZG1/A366BXXSBCZG1
MWDMoroccoAug 2, 2026day 0A366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1
PAKPakistanAug 2, 2026day 0A366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1
PKDPakistanAug 2, 2026day 0A366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1
SINSingapore (Singtel)Aug 2, 2026day 0A366BXXSBCZG1/A366BOLMBCZG1/A366BXXSBCZG1
STHSingapore (StarHub)Aug 2, 2026day 0A366BXXSBCZG1/A366BOLMBCZG1/A366BXXSBCZG1
THLThailandAug 2, 2026day 0A366BXXSBCZG1/A366BOLMBCZG1/A366BXXSBCZG1
TUNTunisiaAug 2, 2026day 0A366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1
XFASouth AfricaAug 2, 2026day 0A366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1
XFVSouth Africa (Vodacom)Aug 2, 2026day 0A366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1
XIDIndonesiaAug 2, 2026day 0A366BXXSBCZG1/A366BOLMBCZG1/A366BXXSBCZG1
XMEMalaysiaAug 2, 2026day 0A366BXXSBCZG1/A366BOLMBCZG1/A366BXXSBCZG1
XNZNew ZealandAug 2, 2026day 0A366BXXSBCZG1/A366BOLMBCZG1/A366BXXSBCZG1
XSAAustraliaAug 2, 2026day 0A366BXXSBCZG1/A366BOLMBCZG1/A366BXXSBCZG1
XSGUnited Arab EmiratesAug 2, 2026day 0A366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1
XSPSingaporeAug 2, 2026day 0A366BXXSBCZG1/A366BOLMBCZG1/A366BXXSBCZG1
XTCPhilippinesAug 2, 2026day 0A366BXXSBCZG1/A366BOLMBCZG1/A366BXXSBCZG1
XXVVietnamAug 2, 2026day 0A366BXXSBCZG1/A366BOLMBCZG1/A366BXXSBCZG1
BOGFrance (Bouygues)Aug 2, 2026day 0A366BXXSBCZG1/A366BOXMBCZG1/A366BXXSBCZG1
EUXEurope (Multi-CSC)Aug 2, 2026day 0A366BXXSBCZG1/A366BOXMBCZG1/A366BXXSBCZG1
EUYEurope (Multi-CSC)Aug 2, 2026day 0A366BXXSBCZG1/A366BOXMBCZG1/A366BXXSBCZG1
MEOPortugal (MEO)Aug 2, 2026day 0A366BXXSBCZG1/A366BOXMBCZG1/A366BXXSBCZG1
MOBAustria (A1)Aug 2, 2026day 0A366BXXSBCZG1/A366BOXMBCZG1/A366BXXSBCZG1
MOTSlovenia (Telekom)Aug 2, 2026day 0A366BXXSBCZG1/A366BOXMBCZG1/A366BXXSBCZG1
MSRSerbiaAug 2, 2026day 0A366BXXSBCZG1/A366BOXMBCZG1/A366BXXSBCZG1
PLSPoland (Plus)Aug 2, 2026day 0A366BXXSBCZG1/A366BOXMBCZG1/A366BXXSBCZG1
PRTPoland (Play)Aug 2, 2026day 0A366BXXSBCZG1/A366BOXMBCZG1/A366BXXSBCZG1
SFRFrance (SFR)Aug 2, 2026day 0A366BXXSBCZG1/A366BOXMBCZG1/A366BXXSBCZG1
SIMSlovenia (A1)Aug 2, 2026day 0A366BXXSBCZG1/A366BOXMBCZG1/A366BXXSBCZG1
SWCSwitzerlandAug 2, 2026day 0A366BXXSBCZG1/A366BOXMBCZG1/A366BXXSBCZG1
TOPSerbia/MontenegroAug 2, 2026day 0A366BXXSBCZG1/A366BOXMBCZG1/A366BXXSBCZG1
TURTurkeyAug 2, 2026day 0A366BXXSBCZG1/A366BOXMBCZG1/A366BXXSBCZG1
VIPCroatia (A1)Aug 2, 2026day 0A366BXXSBCZG1/A366BOXMBCZG1/A366BXXSBCZG1
ILOIsraelAug 16, 2026+14 daysA366BXXSBCZG1/A366BOJMBCZG1/A366BXXSBCZG1

Download and release notes

samloader download -m SM-A366B -r EUX -v A366BXXSBCZG1/A366BOXMBCZG1/A366BXXSBCZG1

Samsung's release notes and security patch level for this update: SM-A366B / EUX on doc.samsungmobile.com. What each part of the build number means: decode A366BXXSBCZG1.