A346BXXSGFZG4 – Galaxy A34 5G firmware

Build A346BXXSGFZG4 is a security update for the Galaxy A34 5G (SM-A346B) on Android 16 (One UI 8). It first appeared on Samsung's servers on Aug 2, 2026 (method) and has reached 18 regions so far. It raises the bootloader bit from 15 to 16: once installed, the device no longer accepts firmware with bit 15 or lower, so a downgrade to A346BXXUFFZE6 is blocked. Samsung still serves this file.

Model
SM-A346B
Android
Android 16
Type
Security
Bootloader bit
16
First released
Aug 2, 2026
Regions
18

Rollout timeline by region

The date each region code (CSC) first received A346BXXSGFZG4, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BOGFrance (Bouygues)Aug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
BTBUnited Kingdom (BT)Aug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
EUXEurope (Multi-CSC)Aug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
EUYEurope (Multi-CSC)Aug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
EVRUnited Kingdom (EE)Aug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
MEOPortugal (MEO)Aug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
MOBAustria (A1)Aug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
MOTSlovenia (Telekom)Aug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
MSRSerbiaAug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
O2CCzech Republic (O2)Aug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
PLSPoland (Plus)Aug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
PRTPoland (Play)Aug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
SFRFrance (SFR)Aug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
SIMSlovenia (A1)Aug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
SWCSwitzerlandAug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
TIMItaly (TIM)Aug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
TOPSerbia/MontenegroAug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4
VIPCroatia (A1)Aug 2, 2026day 0A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4

Download and release notes

samloader download -m SM-A346B -r EUX -v A346BXXSGFZG4/A346BOXMGFZG4/A346BXXSGFZG4

Samsung's release notes and security patch level for this update: SM-A346B / EUX on doc.samsungmobile.com. What each part of the build number means: decode A346BXXSGFZG4.