G996U1UESHHYI2 – Galaxy S21+ 5G firmware

Build G996U1UESHHYI2 is a security update for the Galaxy S21+ 5G (SM-G996U1) on Android 15 (One UI 7). It first appeared on Samsung's servers on Sep 28, 2025 (method) and has reached 15 regions so far. It raises the bootloader bit from 16 to 17: once installed, the device no longer accepts firmware with bit 16 or lower, so a downgrade to G996U1UESGHYF1 is blocked. Samsung still serves this file.

Model
SM-G996U1
Android
Android 15
Type
Security
Bootloader bit
17
First released
Sep 28, 2025
Regions
15

Rollout timeline by region

The date each region code (CSC) first received G996U1UESHHYI2, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)Sep 28, 2025day 0G996U1UESHHYI2/G996U1OYMHHYI2/G996U1UESHHYI2
AIOUSA (Cricket)Sep 28, 2025day 0G996U1UESHHYI2/G996U1OYMHHYI2/G996U1UESHHYI2
ATTUSA (AT&T)Sep 28, 2025day 0G996U1UESHHYI2/G996U1OYMHHYI2/G996U1UESHHYI2
CCTUSA (Comcast)Sep 28, 2025day 0G996U1UESHHYI2/G996U1OYMHHYI2/G996U1UESHHYI2
DSHUSASep 28, 2025day 0G996U1UESHHYI2/G996U1OYMHHYI2/G996U1UESHHYI2
LRAUSA (Bluegrass)Sep 28, 2025day 0G996U1UESHHYI2/G996U1OYMHHYI2/G996U1UESHHYI2
SPRUSA (Sprint)Sep 28, 2025day 0G996U1UESHHYI2/G996U1OYMHHYI2/G996U1UESHHYI2
TFNUSA (TracFone)Sep 28, 2025day 0G996U1UESHHYI2/G996U1OYMHHYI2/G996U1UESHHYI2
TMBUSA (T-Mobile)Sep 28, 2025day 0G996U1UESHHYI2/G996U1OYMHHYI2/G996U1UESHHYI2
TMKUSA (MetroPCS)Sep 28, 2025day 0G996U1UESHHYI2/G996U1OYMHHYI2/G996U1UESHHYI2
USCUSA (US Cellular)Sep 28, 2025day 0G996U1UESHHYI2/G996U1OYMHHYI2/G996U1UESHHYI2
VZWUSA (Verizon)Sep 28, 2025day 0G996U1UESHHYI2/G996U1OYMHHYI2/G996U1UESHHYI2
XAAUSA (unlocked)Sep 28, 2025day 0G996U1UESHHYI2/G996U1OYMHHYI2/G996U1UESHHYI2
XARUSA (Cellular South)Sep 28, 2025day 0G996U1UESHHYI2/G996U1OYMHHYI2/G996U1UESHHYI2
XASUSA (Sprint)Sep 28, 2025day 0G996U1UESHHYI2/G996U1OYMHHYI2/G996U1UESHHYI2

Download and release notes

samloader download -m SM-G996U1 -r XAA -v G996U1UESHHYI2/G996U1OYMHHYI2/G996U1UESHHYI2

Samsung's release notes and security patch level for this update: SM-G996U1 / XAA on doc.samsungmobile.com. What each part of the build number means: decode G996U1UESHHYI2.