A155FXXSADZB5 – Galaxy A15 firmware

Build A155FXXSADZB5 is a security update for the Galaxy A15 (SM-A155F) on Android 16 (One UI 8). It first appeared on Samsung's servers on Mar 8, 2026 (method) and has reached 46 regions so far. It raises the bootloader bit from 9 to 10: once installed, the device no longer accepts firmware with bit 9 or lower, so a downgrade to A155FXXS9DZA2 is blocked. Samsung still serves this file.

Model
SM-A155F
Android
Android 16
Type
Security
Bootloader bit
10
First released
Mar 8, 2026
Regions
46

Rollout timeline by region

The date each region code (CSC) first received A155FXXSADZB5, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
GLBPhilippines (Globe)Mar 8, 2026day 0A155FXXSADZB5/A155FOLMADZB5/A155FXXSADZB5
MM1Singapore (M1)Mar 8, 2026day 0A155FXXSADZB5/A155FOLMADZB5/A155FXXSADZB5
MYMMyanmarMar 8, 2026day 0A155FXXSADZB5/A155FOLMADZB5/A155FXXSADZB5
SINSingapore (Singtel)Mar 8, 2026day 0A155FXXSADZB5/A155FOLMADZB5/A155FXXSADZB5
STHSingapore (StarHub)Mar 8, 2026day 0A155FXXSADZB5/A155FOLMADZB5/A155FXXSADZB5
THLThailandMar 8, 2026day 0A155FXXSADZB5/A155FOLMADZB5/A155FXXSADZB5
XIDIndonesiaMar 8, 2026day 0A155FXXSADZB5/A155FOLEADZB5/A155FXXSADZB5
XMEMalaysiaMar 8, 2026day 0A155FXXSADZB5/A155FOLMADZB5/A155FXXSADZB5
XNZNew ZealandMar 8, 2026day 0A155FXXSADZB5/A155FOLMADZB5/A155FXXSADZB5
XSPSingaporeMar 8, 2026day 0A155FXXSADZB5/A155FOLMADZB5/A155FXXSADZB5
XTCPhilippinesMar 8, 2026day 0A155FXXSADZB5/A155FOLMADZB5/A155FXXSADZB5
XXVVietnamMar 8, 2026day 0A155FXXSADZB5/A155FOLMADZB5/A155FXXSADZB5
ACRGhanaMar 9, 2026+1 dayA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
AFRAfricaMar 9, 2026+1 dayA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
DKRSenegalMar 9, 2026+1 dayA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
ECTNigeriaMar 9, 2026+1 dayA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
MWDMoroccoMar 9, 2026+1 dayA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
PKDPakistanMar 9, 2026+1 dayA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
TURTurkeyMar 9, 2026+1 dayA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
XFASouth AfricaMar 9, 2026+1 dayA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
XFESouth AfricaMar 9, 2026+1 dayA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
XFVSouth Africa (Vodacom)Mar 9, 2026+1 dayA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
AFGAfghanistanMar 10, 2026+2 daysA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
EGYEgyptMar 10, 2026+2 daysA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
KSASaudi ArabiaMar 10, 2026+2 daysA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
LYSLibyaMar 10, 2026+2 daysA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
MIDMiddle EastMar 10, 2026+2 daysA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
PAKPakistanMar 10, 2026+2 daysA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
TUNTunisiaMar 10, 2026+2 daysA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
XSGUnited Arab EmiratesMar 10, 2026+2 daysA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5
BOGFrance (Bouygues)Mar 10, 2026+2 daysA155FXXSADZB5/A155FOXMADZB5/A155FXXSADZB5
CAUCaucasusMar 10, 2026+2 daysA155FXXSADZB5/A155FOXMADZB5/A155FXXSADZB5
EUXEurope (Multi-CSC)Mar 10, 2026+2 daysA155FXXSADZB5/A155FOXMADZB5/A155FXXSADZB5
EUYEurope (Multi-CSC)Mar 10, 2026+2 daysA155FXXSADZB5/A155FOXMADZB5/A155FXXSADZB5
EVRUnited Kingdom (EE)Mar 10, 2026+2 daysA155FXXSADZB5/A155FOXMADZB5/A155FXXSADZB5
MEOPortugal (MEO)Mar 10, 2026+2 daysA155FXXSADZB5/A155FOXMADZB5/A155FXXSADZB5
MSRSerbiaMar 10, 2026+2 daysA155FXXSADZB5/A155FOXMADZB5/A155FXXSADZB5
O2CCzech Republic (O2)Mar 10, 2026+2 daysA155FXXSADZB5/A155FOXMADZB5/A155FXXSADZB5
PLSPoland (Plus)Mar 10, 2026+2 daysA155FXXSADZB5/A155FOXMADZB5/A155FXXSADZB5
PRTPoland (Play)Mar 10, 2026+2 daysA155FXXSADZB5/A155FOXMADZB5/A155FXXSADZB5
SERRussiaMar 10, 2026+2 daysA155FXXSADZB5/A155FOXMADZB5/A155FXXSADZB5
SFRFrance (SFR)Mar 10, 2026+2 daysA155FXXSADZB5/A155FOXMADZB5/A155FXXSADZB5
SKZKazakhstanMar 10, 2026+2 daysA155FXXSADZB5/A155FOXMADZB5/A155FXXSADZB5
TOPSerbia/MontenegroMar 10, 2026+2 daysA155FXXSADZB5/A155FOXMADZB5/A155FXXSADZB5
VIPCroatia (A1)Mar 10, 2026+2 daysA155FXXSADZB5/A155FOXMADZB5/A155FXXSADZB5
ILOIsraelMar 11, 2026+3 daysA155FXXSADZB5/A155FOJMADZB5/A155FXXSADZB5

Download and release notes

samloader download -m SM-A155F -r EUX -v A155FXXSADZB5/A155FOXMADZB5/A155FXXSADZB5

Samsung's release notes and security patch level for this update: SM-A155F / EUX on doc.samsungmobile.com. What each part of the build number means: decode A155FXXSADZB5.