A236U1UESEEZC4 – Galaxy A23 5G firmware

Build A236U1UESEEZC4 is a security update for the Galaxy A23 5G (SM-A236U1) on Android 14 (One UI 6). It first appeared on Samsung's servers on Mar 29, 2026 (method) and has reached 13 regions so far. It raises the bootloader bit from 13 to 14: once installed, the device no longer accepts firmware with bit 13 or lower, so a downgrade to A236U1UESDEZA1 is blocked. Samsung still serves this file.

Model
SM-A236U1
Android
Android 14
Type
Security
Bootloader bit
14
First released
Mar 29, 2026
Regions
13

Rollout timeline by region

The date each region code (CSC) first received A236U1UESEEZC4, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)Mar 29, 2026day 0A236U1UESEEZC4/A236U1OYMEEZC4/A236U1UESEEZC4
AIOUSA (Cricket)Mar 29, 2026day 0A236U1UESEEZC4/A236U1OYMEEZC4/A236U1UESEEZC4
ATTUSA (AT&T)Mar 29, 2026day 0A236U1UESEEZC4/A236U1OYMEEZC4/A236U1UESEEZC4
CCTUSA (Comcast)Mar 29, 2026day 0A236U1UESEEZC4/A236U1OYMEEZC4/A236U1UESEEZC4
DSAUSAMar 29, 2026day 0A236U1UESEEZC4/A236U1OYMEEZC4/A236U1UESEEZC4
DSHUSAMar 29, 2026day 0A236U1UESEEZC4/A236U1OYMEEZC4/A236U1UESEEZC4
LRAUSA (Bluegrass)Mar 29, 2026day 0A236U1UESEEZC4/A236U1OYMEEZC4/A236U1UESEEZC4
TMBUSA (T-Mobile)Mar 29, 2026day 0A236U1UESEEZC4/A236U1OYMEEZC4/A236U1UESEEZC4
TMKUSA (MetroPCS)Mar 29, 2026day 0A236U1UESEEZC4/A236U1OYMEEZC4/A236U1UESEEZC4
USCUSA (US Cellular)Mar 29, 2026day 0A236U1UESEEZC4/A236U1OYMEEZC4/A236U1UESEEZC4
VZWUSA (Verizon)Mar 29, 2026day 0A236U1UESEEZC4/A236U1OYMEEZC4/A236U1UESEEZC4
XAAUSA (unlocked)Mar 29, 2026day 0A236U1UESEEZC4/A236U1OYMEEZC4/A236U1UESEEZC4
XARUSA (Cellular South)Mar 29, 2026day 0A236U1UESEEZC4/A236U1OYMEEZC4/A236U1UESEEZC4

Download and release notes

samloader download -m SM-A236U1 -r XAA -v A236U1UESEEZC4/A236U1OYMEEZC4/A236U1UESEEZC4

Samsung's release notes and security patch level for this update: SM-A236U1 / XAA on doc.samsungmobile.com. What each part of the build number means: decode A236U1UESEEZC4.