A236U1UESDEZA1 – Galaxy A23 5G firmware

Build A236U1UESDEZA1 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 Jan 27, 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 A236U1UESCEYJ2 is blocked. Samsung still serves this file.

Model
SM-A236U1
Android
Android 14
Type
Security
Bootloader bit
13
First released
Jan 27, 2026
Regions
13

Rollout timeline by region

The date each region code (CSC) first received A236U1UESDEZA1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)Jan 27, 2026day 0A236U1UESDEZA1/A236U1OYMDEZA1/A236U1UESDEZA1
AIOUSA (Cricket)Jan 27, 2026day 0A236U1UESDEZA1/A236U1OYMDEZA1/A236U1UESDEZA1
ATTUSA (AT&T)Jan 27, 2026day 0A236U1UESDEZA1/A236U1OYMDEZA1/A236U1UESDEZA1
CCTUSA (Comcast)Jan 27, 2026day 0A236U1UESDEZA1/A236U1OYMDEZA1/A236U1UESDEZA1
DSAUSAJan 27, 2026day 0A236U1UESDEZA1/A236U1OYMDEZA1/A236U1UESDEZA1
DSHUSAJan 27, 2026day 0A236U1UESDEZA1/A236U1OYMDEZA1/A236U1UESDEZA1
LRAUSA (Bluegrass)Jan 27, 2026day 0A236U1UESDEZA1/A236U1OYMDEZA1/A236U1UESDEZA1
TMBUSA (T-Mobile)Jan 27, 2026day 0A236U1UESDEZA1/A236U1OYMDEZA1/A236U1UESDEZA1
TMKUSA (MetroPCS)Jan 27, 2026day 0A236U1UESDEZA1/A236U1OYMDEZA1/A236U1UESDEZA1
USCUSA (US Cellular)Jan 27, 2026day 0A236U1UESDEZA1/A236U1OYMDEZA1/A236U1UESDEZA1
VZWUSA (Verizon)Jan 27, 2026day 0A236U1UESDEZA1/A236U1OYMDEZA1/A236U1UESDEZA1
XAAUSA (unlocked)Jan 27, 2026day 0A236U1UESDEZA1/A236U1OYMDEZA1/A236U1UESDEZA1
XARUSA (Cellular South)Jan 27, 2026day 0A236U1UESDEZA1/A236U1OYMDEZA1/A236U1UESDEZA1

Download and release notes

samloader download -m SM-A236U1 -r XAA -v A236U1UESDEZA1/A236U1OYMDEZA1/A236U1UESDEZA1

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 A236U1UESDEZA1.