A336BXXSIGZE1 – Galaxy A33 5G firmware

Build A336BXXSIGZE1 is a security update for the Galaxy A33 5G (SM-A336B) on Android 16 (One UI 8). It first appeared on Samsung's servers on May 24, 2026 (method) and has reached 22 regions so far. It raises the bootloader bit from 17 to 18: once installed, the device no longer accepts firmware with bit 17 or lower, so a downgrade to A336BXXSHGZB6 is blocked. Samsung still serves this file.

Model
SM-A336B
Android
Android 16
Type
Security
Bootloader bit
18
First released
May 24, 2026
Regions
22

Rollout timeline by region

The date each region code (CSC) first received A336BXXSIGZE1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BOGFrance (Bouygues)May 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
BTBUnited Kingdom (BT)May 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
CAUCaucasusMay 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
EUXEurope (Multi-CSC)May 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
EUYEurope (Multi-CSC)May 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
EVRUnited Kingdom (EE)May 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
MEOPortugal (MEO)May 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
MOBAustria (A1)May 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
MOTSlovenia (Telekom)May 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
MSRSerbiaMay 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
O2CCzech Republic (O2)May 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
PLSPoland (Plus)May 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
PRTPoland (Play)May 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
SEKUkraineMay 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
SERRussiaMay 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
SFRFrance (SFR)May 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
SIMSlovenia (A1)May 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
SKZKazakhstanMay 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
SWCSwitzerlandMay 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
TIMItaly (TIM)May 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
TOPSerbia/MontenegroMay 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1
VIPCroatia (A1)May 24, 2026day 0A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1

Download and release notes

samloader download -m SM-A336B -r EUX -v A336BXXSIGZE1/A336BOXMIGZE1/A336BXXSIGZE1

Samsung's release notes and security patch level for this update: SM-A336B / EUX on doc.samsungmobile.com. What each part of the build number means: decode A336BXXSIGZE1.