A356U1UESCDZH1 – Galaxy A35 5G firmware

Build A356U1UESCDZH1 is a security update for the Galaxy A35 5G (SM-A356U1) on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 16, 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 A356U1UESBDZG4 is blocked. Samsung still serves this file.

Model
SM-A356U1
Android
Android 16
Type
Security
Bootloader bit
12
First released
Sep 16, 2026
Regions
13

Rollout timeline by region

The date each region code (CSC) first received A356U1UESCDZH1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)Sep 16, 2026day 0A356U1UESCDZH1/A356U1OYMCDZH1/A356U1UESCDZH1
AIOUSA (Cricket)Sep 16, 2026day 0A356U1UESCDZH1/A356U1OYMCDZH1/A356U1UESCDZH1
ATTUSA (AT&T)Sep 16, 2026day 0A356U1UESCDZH1/A356U1OYMCDZH1/A356U1UESCDZH1
CCTUSA (Comcast)Sep 16, 2026day 0A356U1UESCDZH1/A356U1OYMCDZH1/A356U1UESCDZH1
DSAUSASep 16, 2026day 0A356U1UESCDZH1/A356U1OYMCDZH1/A356U1UESCDZH1
DSHUSASep 16, 2026day 0A356U1UESCDZH1/A356U1OYMCDZH1/A356U1UESCDZH1
LRAUSA (Bluegrass)Sep 16, 2026day 0A356U1UESCDZH1/A356U1OYMCDZH1/A356U1UESCDZH1
TMBUSA (T-Mobile)Sep 16, 2026day 0A356U1UESCDZH1/A356U1OYMCDZH1/A356U1UESCDZH1
TMKUSA (MetroPCS)Sep 16, 2026day 0A356U1UESCDZH1/A356U1OYMCDZH1/A356U1UESCDZH1
USCUSA (US Cellular)Sep 16, 2026day 0A356U1UESCDZH1/A356U1OYMCDZH1/A356U1UESCDZH1
VZWUSA (Verizon)Sep 16, 2026day 0A356U1UESCDZH1/A356U1OYMCDZH1/A356U1UESCDZH1
XAAUSA (unlocked)Sep 16, 2026day 0A356U1UESCDZH1/A356U1OYMCDZH1/A356U1UESCDZH1
XARUSA (Cellular South)Sep 16, 2026day 0A356U1UESCDZH1/A356U1OYMCDZH1/A356U1UESCDZH1

Download and release notes

samloader download -m SM-A356U1 -r XAA -v A356U1UESCDZH1/A356U1OYMCDZH1/A356U1UESCDZH1

Samsung's release notes and security patch level for this update: SM-A356U1 / XAA on doc.samsungmobile.com. What each part of the build number means: decode A356U1UESCDZH1.