A356BXXSCDZH1 – Galaxy A35 5G firmware

Build A356BXXSCDZH1 is a security update for the Galaxy A35 5G (SM-A356B) on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 6, 2026 (method) and has reached 16 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 A356BXXSBDZG2 is blocked. Samsung still serves this file.

Model
SM-A356B
Android
Android 16
Type
Security
Bootloader bit
12
First released
Sep 6, 2026
Regions
16

Rollout timeline by region

The date each region code (CSC) first received A356BXXSCDZH1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BOGFrance (Bouygues)Sep 6, 2026day 0A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1
EUXEurope (Multi-CSC)Sep 6, 2026day 0A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1
EUYEurope (Multi-CSC)Sep 6, 2026day 0A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1
EVRUnited Kingdom (EE)Sep 6, 2026day 0A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1
MEOPortugal (MEO)Sep 6, 2026day 0A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1
MOBAustria (A1)Sep 6, 2026day 0A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1
MOTSlovenia (Telekom)Sep 6, 2026day 0A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1
MSRSerbiaSep 6, 2026day 0A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1
O2CCzech Republic (O2)Sep 6, 2026day 0A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1
PLSPoland (Plus)Sep 6, 2026day 0A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1
PRTPoland (Play)Sep 6, 2026day 0A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1
SFRFrance (SFR)Sep 6, 2026day 0A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1
SIMSlovenia (A1)Sep 6, 2026day 0A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1
SWCSwitzerlandSep 6, 2026day 0A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1
TOPSerbia/MontenegroSep 6, 2026day 0A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1
VIPCroatia (A1)Sep 6, 2026day 0A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1

Download and release notes

samloader download -m SM-A356B -r EUX -v A356BXXSCDZH1/A356BOXMCDZH1/A356BXXSCDZH1

Samsung's release notes and security patch level for this update: SM-A356B / EUX on doc.samsungmobile.com. What each part of the build number means: decode A356BXXSCDZH1.