A536BXXSLGZD1 – Galaxy A53 5G firmware

Build A536BXXSLGZD1 is a security update for the Galaxy A53 5G (SM-A536B) on Android 16 (One UI 8). It first appeared on Samsung's servers on Apr 19, 2026 (method) and has reached 18 regions so far. It raises the bootloader bit from 20 to 21: once installed, the device no longer accepts firmware with bit 20 or lower, so a downgrade to A536BXXSKGZC1 is blocked. Samsung still serves this file.

Model
SM-A536B
Android
Android 16
Type
Security
Bootloader bit
21
First released
Apr 19, 2026
Regions
18

Rollout timeline by region

The date each region code (CSC) first received A536BXXSLGZD1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BOGFrance (Bouygues)Apr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
BTBUnited Kingdom (BT)Apr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
EUXEurope (Multi-CSC)Apr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
EUYEurope (Multi-CSC)Apr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
EVRUnited Kingdom (EE)Apr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
MEOPortugal (MEO)Apr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
MOBAustria (A1)Apr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
MOTSlovenia (Telekom)Apr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
MSRSerbiaApr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
O2CCzech Republic (O2)Apr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
PLSPoland (Plus)Apr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
PRTPoland (Play)Apr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
SFRFrance (SFR)Apr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
SIMSlovenia (A1)Apr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
SWCSwitzerlandApr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
TIMItaly (TIM)Apr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
TOPSerbia/MontenegroApr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1
VIPCroatia (A1)Apr 19, 2026day 0A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1

Download and release notes

samloader download -m SM-A536B -r EUX -v A536BXXSLGZD1/A536BOXMLGZD1/A536BXXSLGZD1

Samsung's release notes and security patch level for this update: SM-A536B / EUX on doc.samsungmobile.com. What each part of the build number means: decode A536BXXSLGZD1.