A346BXXSFEZC7 – Galaxy A34 5G firmware

Build A346BXXSFEZC7 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 Apr 20, 2026 (method) and has reached 18 regions so far. It raises the bootloader bit from 14 to 15: once installed, the device no longer accepts firmware with bit 14 or lower, so a downgrade to A346BXXSEEZB6 is blocked. Samsung still serves this file.

Model
SM-A346B
Android
Android 16
Type
Security
Bootloader bit
15
First released
Apr 20, 2026
Regions
18

Rollout timeline by region

The date each region code (CSC) first received A346BXXSFEZC7, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BOGFrance (Bouygues)Apr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
BTBUnited Kingdom (BT)Apr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
EUXEurope (Multi-CSC)Apr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
EUYEurope (Multi-CSC)Apr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
EVRUnited Kingdom (EE)Apr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
MEOPortugal (MEO)Apr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
MOBAustria (A1)Apr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
MOTSlovenia (Telekom)Apr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
MSRSerbiaApr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
O2CCzech Republic (O2)Apr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
PLSPoland (Plus)Apr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
PRTPoland (Play)Apr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
SFRFrance (SFR)Apr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
SIMSlovenia (A1)Apr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
SWCSwitzerlandApr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
TIMItaly (TIM)Apr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
TOPSerbia/MontenegroApr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7
VIPCroatia (A1)Apr 20, 2026day 0A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7

Download and release notes

samloader download -m SM-A346B -r EUX -v A346BXXSFEZC7/A346BOXMFEZC7/A346BXXSFEZC7

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 A346BXXSFEZC7.