A156U1UESDEZJ6 – Galaxy A15 5G firmware

Build A156U1UESDEZJ6 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 Oct 19, 2026 (method) and has reached 13 regions so far. It raises the bootloader bit from 12 to 13: once installed, the device no longer accepts firmware with bit 12 or lower, so a downgrade to A156U1UESCEZG1 is blocked. Samsung still serves this file.

Model
SM-A156U1
Android
Android 16
Type
Security
Bootloader bit
13
First released
Oct 19, 2026
Regions
13

Rollout timeline by region

The date each region code (CSC) first received A156U1UESDEZJ6, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)Oct 19, 2026day 0A156U1UESDEZJ6/A156U1OYMDEZJ6/A156U1UESDEZJ6
AIOUSA (Cricket)Oct 19, 2026day 0A156U1UESDEZJ6/A156U1OYMDEZJ6/A156U1UESDEZJ6
ATTUSA (AT&T)Oct 19, 2026day 0A156U1UESDEZJ6/A156U1OYMDEZJ6/A156U1UESDEZJ6
CCTUSA (Comcast)Oct 19, 2026day 0A156U1UESDEZJ6/A156U1OYMDEZJ6/A156U1UESDEZJ6
DSAUSAOct 19, 2026day 0A156U1UESDEZJ6/A156U1OYMDEZJ6/A156U1UESDEZJ6
DSHUSAOct 19, 2026day 0A156U1UESDEZJ6/A156U1OYMDEZJ6/A156U1UESDEZJ6
LRAUSA (Bluegrass)Oct 19, 2026day 0A156U1UESDEZJ6/A156U1OYMDEZJ6/A156U1UESDEZJ6
TMBUSA (T-Mobile)Oct 19, 2026day 0A156U1UESDEZJ6/A156U1OYMDEZJ6/A156U1UESDEZJ6
TMKUSA (MetroPCS)Oct 19, 2026day 0A156U1UESDEZJ6/A156U1OYMDEZJ6/A156U1UESDEZJ6
USCUSA (US Cellular)Oct 19, 2026day 0A156U1UESDEZJ6/A156U1OYMDEZJ6/A156U1UESDEZJ6
VZWUSA (Verizon)Oct 19, 2026day 0A156U1UESDEZJ6/A156U1OYMDEZJ6/A156U1UESDEZJ6
XAAUSA (unlocked)Oct 19, 2026day 0A156U1UESDEZJ6/A156U1OYMDEZJ6/A156U1UESDEZJ6
XARUSA (Cellular South)Oct 19, 2026day 0A156U1UESDEZJ6/A156U1OYMDEZJ6/A156U1UESDEZJ6

Download and release notes

samloader download -m SM-A156U1 -r XAA -v A156U1UESDEZJ6/A156U1OYMDEZJ6/A156U1UESDEZJ6

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 A156U1UESDEZJ6.