A156U1UESCEZG1 – Galaxy A15 5G firmware

Build A156U1UESCEZG1 is a security update for the Galaxy A15 5G (SM-A156U1) on Android 16 (One UI 8). It first appeared on Samsung's servers on Jul 30, 2026 (method) and has reached 13 regions so far. It raises the bootloader bit from 11 to 12: once installed, the device no longer accepts firmware with bit 11 or lower, so a downgrade to A156U1UESBEZF6 is blocked. Samsung still serves this file.

Model
SM-A156U1
Android
Android 16
Type
Security
Bootloader bit
12
First released
Jul 30, 2026
Regions
13

Rollout timeline by region

The date each region code (CSC) first received A156U1UESCEZG1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)Jul 30, 2026day 0A156U1UESCEZG1/A156U1OYMCEZG1/A156U1UESCEZG1
AIOUSA (Cricket)Jul 30, 2026day 0A156U1UESCEZG1/A156U1OYMCEZG1/A156U1UESCEZG1
ATTUSA (AT&T)Jul 30, 2026day 0A156U1UESCEZG1/A156U1OYMCEZG1/A156U1UESCEZG1
CCTUSA (Comcast)Jul 30, 2026day 0A156U1UESCEZG1/A156U1OYMCEZG1/A156U1UESCEZG1
DSAUSAJul 30, 2026day 0A156U1UESCEZG1/A156U1OYMCEZG1/A156U1UESCEZG1
DSHUSAJul 30, 2026day 0A156U1UESCEZG1/A156U1OYMCEZG1/A156U1UESCEZG1
LRAUSA (Bluegrass)Jul 30, 2026day 0A156U1UESCEZG1/A156U1OYMCEZG1/A156U1UESCEZG1
TMBUSA (T-Mobile)Jul 30, 2026day 0A156U1UESCEZG1/A156U1OYMCEZG1/A156U1UESCEZG1
TMKUSA (MetroPCS)Jul 30, 2026day 0A156U1UESCEZG1/A156U1OYMCEZG1/A156U1UESCEZG1
USCUSA (US Cellular)Jul 30, 2026day 0A156U1UESCEZG1/A156U1OYMCEZG1/A156U1UESCEZG1
VZWUSA (Verizon)Jul 30, 2026day 0A156U1UESCEZG1/A156U1OYMCEZG1/A156U1UESCEZG1
XAAUSA (unlocked)Jul 30, 2026day 0A156U1UESCEZG1/A156U1OYMCEZG1/A156U1UESCEZG1
XARUSA (Cellular South)Jul 30, 2026day 0A156U1UESCEZG1/A156U1OYMCEZG1/A156U1UESCEZG1

Download and release notes

samloader download -m SM-A156U1 -r XAA -v A156U1UESCEZG1/A156U1OYMCEZG1/A156U1UESCEZG1

Samsung's release notes and security patch level for this update: SM-A156U1 / XAA on doc.samsungmobile.com. What each part of the build number means: decode A156U1UESCEZG1.