A366BXXSACZF1 – Galaxy A36 5G firmware

Build A366BXXSACZF1 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 Jun 29, 2026 (method) and has reached 44 regions so far. It keeps bootloader bit 10, so downgrading to the previous build A366BXXSACZE3 is still possible. Samsung still serves this file.

Model
SM-A366B
Android
Android 16
Type
Security
Bootloader bit
10
First released
Jun 29, 2026
Regions
44

Rollout timeline by region

The date each region code (CSC) first received A366BXXSACZF1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
GLBPhilippines (Globe)Jun 29, 2026day 0A366BXXSACZF1/A366BOLMACZF1/A366BXXSACZF1
MM1Singapore (M1)Jun 29, 2026day 0A366BXXSACZF1/A366BOLMACZF1/A366BXXSACZF1
SINSingapore (Singtel)Jun 29, 2026day 0A366BXXSACZF1/A366BOLMACZF1/A366BXXSACZF1
STHSingapore (StarHub)Jun 29, 2026day 0A366BXXSACZF1/A366BOLMACZF1/A366BXXSACZF1
THLThailandJun 29, 2026day 0A366BXXSACZF1/A366BOLMACZF1/A366BXXSACZF1
XMEMalaysiaJun 29, 2026day 0A366BXXSACZF1/A366BOLMACZF1/A366BXXSACZF1
XNZNew ZealandJun 29, 2026day 0A366BXXSACZF1/A366BOLMACZF1/A366BXXSACZF1
XSPSingaporeJun 29, 2026day 0A366BXXSACZF1/A366BOLMACZF1/A366BXXSACZF1
XTCPhilippinesJun 29, 2026day 0A366BXXSACZF1/A366BOLMACZF1/A366BXXSACZF1
XXVVietnamJun 29, 2026day 0A366BXXSACZF1/A366BOLMACZF1/A366BXXSACZF1
ACRGhanaJun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
AFGAfghanistanJun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
AFRAfricaJun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
DKRSenegalJun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
ECTNigeriaJun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
EGYEgyptJun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
ILOIsraelJun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
KSASaudi ArabiaJun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
LYSLibyaJun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
MIDMiddle EastJun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
MWDMoroccoJun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
PAKPakistanJun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
PKDPakistanJun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
TUNTunisiaJun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
XFASouth AfricaJun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
XFVSouth Africa (Vodacom)Jun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
XSGUnited Arab EmiratesJun 29, 2026day 0A366BXXSACZF1/A366BOJMACZF1/A366BXXSACZF1
XSAAustraliaJun 29, 2026day 0A366BXXSACZF1/A366BOLMACZF1/A366BXXSACZF1
BOGFrance (Bouygues)Jun 30, 2026+1 dayA366BXXSACZF1/A366BOXMACZF1/A366BXXSACZF1
EUXEurope (Multi-CSC)Jun 30, 2026+1 dayA366BXXSACZF1/A366BOXMACZF1/A366BXXSACZF1
EUYEurope (Multi-CSC)Jun 30, 2026+1 dayA366BXXSACZF1/A366BOXMACZF1/A366BXXSACZF1
MEOPortugal (MEO)Jun 30, 2026+1 dayA366BXXSACZF1/A366BOXMACZF1/A366BXXSACZF1
MOBAustria (A1)Jun 30, 2026+1 dayA366BXXSACZF1/A366BOXMACZF1/A366BXXSACZF1
MOTSlovenia (Telekom)Jun 30, 2026+1 dayA366BXXSACZF1/A366BOXMACZF1/A366BXXSACZF1
MSRSerbiaJun 30, 2026+1 dayA366BXXSACZF1/A366BOXMACZF1/A366BXXSACZF1
PLSPoland (Plus)Jun 30, 2026+1 dayA366BXXSACZF1/A366BOXMACZF1/A366BXXSACZF1
PRTPoland (Play)Jun 30, 2026+1 dayA366BXXSACZF1/A366BOXMACZF1/A366BXXSACZF1
SFRFrance (SFR)Jun 30, 2026+1 dayA366BXXSACZF1/A366BOXMACZF1/A366BXXSACZF1
SIMSlovenia (A1)Jun 30, 2026+1 dayA366BXXSACZF1/A366BOXMACZF1/A366BXXSACZF1
SWCSwitzerlandJun 30, 2026+1 dayA366BXXSACZF1/A366BOXMACZF1/A366BXXSACZF1
TOPSerbia/MontenegroJun 30, 2026+1 dayA366BXXSACZF1/A366BOXMACZF1/A366BXXSACZF1
VIPCroatia (A1)Jun 30, 2026+1 dayA366BXXSACZF1/A366BOXMACZF1/A366BXXSACZF1
TURTurkeyJun 30, 2026+1 dayA366BXXSACZF1/A366BOXMACZF1/A366BXXSACZF1
XIDIndonesiaJul 1, 2026+2 daysA366BXXSACZF1/A366BOLMACZF1/A366BXXSACZF1

Download and release notes

samloader download -m SM-A366B -r EUX -v A366BXXSACZF1/A366BOXMACZF1/A366BXXSACZF1

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 A366BXXSACZF1.