A356U1UESACZD5 – Galaxy A35 5G firmware

Build A356U1UESACZD5 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 May 6, 2026 (method) and has reached 13 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 A356U1UES9CZB6 is blocked. Samsung still serves this file.

Model
SM-A356U1
Android
Android 16
Type
Security
Bootloader bit
10
First released
May 6, 2026
Regions
13

Rollout timeline by region

The date each region code (CSC) first received A356U1UESACZD5, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)May 6, 2026day 0A356U1UESACZD5/A356U1OYMACZD5/A356U1UESACZD5
AIOUSA (Cricket)May 6, 2026day 0A356U1UESACZD5/A356U1OYMACZD5/A356U1UESACZD5
ATTUSA (AT&T)May 6, 2026day 0A356U1UESACZD5/A356U1OYMACZD5/A356U1UESACZD5
CCTUSA (Comcast)May 6, 2026day 0A356U1UESACZD5/A356U1OYMACZD5/A356U1UESACZD5
DSAUSAMay 6, 2026day 0A356U1UESACZD5/A356U1OYMACZD5/A356U1UESACZD5
DSHUSAMay 6, 2026day 0A356U1UESACZD5/A356U1OYMACZD5/A356U1UESACZD5
LRAUSA (Bluegrass)May 6, 2026day 0A356U1UESACZD5/A356U1OYMACZD5/A356U1UESACZD5
TMBUSA (T-Mobile)May 6, 2026day 0A356U1UESACZD5/A356U1OYMACZD5/A356U1UESACZD5
TMKUSA (MetroPCS)May 6, 2026day 0A356U1UESACZD5/A356U1OYMACZD5/A356U1UESACZD5
USCUSA (US Cellular)May 6, 2026day 0A356U1UESACZD5/A356U1OYMACZD5/A356U1UESACZD5
VZWUSA (Verizon)May 6, 2026day 0A356U1UESACZD5/A356U1OYMACZD5/A356U1UESACZD5
XAAUSA (unlocked)May 6, 2026day 0A356U1UESACZD5/A356U1OYMACZD5/A356U1UESACZD5
XARUSA (Cellular South)May 6, 2026day 0A356U1UESACZD5/A356U1OYMACZD5/A356U1UESACZD5

Download and release notes

samloader download -m SM-A356U1 -r XAA -v A356U1UESACZD5/A356U1OYMACZD5/A356U1UESACZD5

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 A356U1UESACZD5.