A576U1UES6AZI3 – Galaxy A57 5G firmware

Build A576U1UES6AZI3 is a security update for the Galaxy A57 5G (SM-A576U1) on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 15, 2026 (method) and has reached 12 regions so far. It raises the bootloader bit from 5 to 6: once installed, the device no longer accepts firmware with bit 5 or lower, so a downgrade to A576U1UES5AZH3 is blocked. Samsung still serves this file.

Model
SM-A576U1
Android
Android 16
Type
Security
Bootloader bit
6
First released
Sep 15, 2026
Regions
12

Rollout timeline by region

The date each region code (CSC) first received A576U1UES6AZI3, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ATTUSA (AT&T)Sep 15, 2026day 0A576U1UES6AZI3/A576U1OYM6AZI3/A576U1UES6AZI3
AIOUSA (Cricket)Sep 15, 2026day 0A576U1UES6AZI3/A576U1OYM6AZI3/A576U1UES6AZI3
XARUSA (Cellular South)Sep 15, 2026day 0A576U1UES6AZI3/A576U1OYM6AZI3/A576U1UES6AZI3
DSHUSASep 15, 2026day 0A576U1UES6AZI3/A576U1OYM6AZI3/A576U1UES6AZI3
LRAUSA (Bluegrass)Sep 15, 2026day 0A576U1UES6AZI3/A576U1OYM6AZI3/A576U1UES6AZI3
VZWUSA (Verizon)Sep 15, 2026day 0A576U1UES6AZI3/A576U1OYM6AZI3/A576U1UES6AZI3
XAAUSA (unlocked)Sep 15, 2026day 0A576U1UES6AZI3/A576U1OYM6AZI3/A576U1UES6AZI3
ACGUSA (C Spire)Sep 15, 2026day 0A576U1UES6AZI3/A576U1OYM6AZI3/A576U1UES6AZI3
CCTUSA (Comcast)Sep 15, 2026day 0A576U1UES6AZI3/A576U1OYM6AZI3/A576U1UES6AZI3
DSAUSASep 15, 2026day 0A576U1UES6AZI3/A576U1OYM6AZI3/A576U1UES6AZI3
TMKUSA (MetroPCS)Sep 16, 2026+1 dayA576U1UES6AZI3/A576U1OYM6AZI3/A576U1UES6AZI3
TMBUSA (T-Mobile)Sep 16, 2026+1 dayA576U1UES6AZI3/A576U1OYM6AZI3/A576U1UES6AZI3

Download and release notes

samloader download -m SM-A576U1 -r XAA -v A576U1UES6AZI3/A576U1OYM6AZI3/A576U1UES6AZI3

Samsung's release notes and security patch level for this update: SM-A576U1 / XAA on doc.samsungmobile.com. What each part of the build number means: decode A576U1UES6AZI3.