A566EXXSDCZHB – Galaxy A56 5G firmware

Build A566EXXSDCZHB is a security update for the Galaxy A56 5G (SM-A566E) on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 6, 2026 (method) and has reached 41 regions so far. It keeps bootloader bit 13, so downgrading to the previous build A566EXXSDCZHC is still possible. Samsung still serves this file.

Model
SM-A566E
Android
Android 16
Type
Security
Bootloader bit
13
First released
Sep 6, 2026
Regions
41

Rollout timeline by region

The date each region code (CSC) first received A566EXXSDCZHB, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
CAUCaucasusSep 6, 2026day 0A566EXXSDCZHB/A566EOXEDCZHB/A566EXXSDCZHB
SERRussiaSep 6, 2026day 0A566EXXSDCZHB/A566EOXEDCZHB/A566EXXSDCZHB
SKZKazakhstanSep 6, 2026day 0A566EXXSDCZHB/A566EOXEDCZHB/A566EXXSDCZHB
COMColombia (Claro)Sep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
CRCCosta RicaSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
AROArgentinaSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
BVOBoliviaSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
GTOGuatemalaSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
IUSMexico (AT&T)Sep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
UPOUruguaySep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
UYOUruguaySep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
UFNArgentina (Movistar)Sep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
ZTABrazil (Claro)Sep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
ZTMBrazil (TIM)Sep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
ZTOBrazilSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
ZVVBrazil (Vivo)Sep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
SAMOceaniaSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
TCEMexico (Telcel)Sep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
TGPParaguaySep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
TMMMyanmarSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
TPAPanamaSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
PEOPeruSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
PETPeru (Movistar)Sep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
PGUGuatemalaSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
PNTPanamaSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
PSNArgentina (Personal)Sep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
DORDominican RepublicSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
EBEEcuadorSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
ECOEcuadorSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
GLONigeria (Glo)Sep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
MXOMexicoSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
CDRDominican RepublicSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
CGUGuatemala (Claro)Sep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
CTIArgentina (Claro)Sep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
CHEChile (Entel)Sep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
CHLChile (Claro)Sep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
CHOChileSep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
CHTChile (Movistar)Sep 10, 2026+4 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
COBColombia (Movistar)Sep 14, 2026+8 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
COLColombiaSep 14, 2026+8 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB
COOColombiaSep 14, 2026+8 daysA566EXXSDCZHB/A566EOWODCZHB/A566EXXSDCZHB

Download and release notes

samloader download -m SM-A566E -r CAU -v A566EXXSDCZHB/A566EOXEDCZHB/A566EXXSDCZHB

Samsung's release notes and security patch level for this update: SM-A566E / CAU on doc.samsungmobile.com. What each part of the build number means: decode A566EXXSDCZHB.