G990U1UESNIZF3 – Galaxy S21 FE 5G firmware

Build G990U1UESNIZF3 is a security update for the Galaxy S21 FE 5G (SM-G990U1) on Android 16 (One UI 8). It first appeared on Samsung's servers on Jul 8, 2026 (method) and has reached 14 regions so far. It keeps bootloader bit 23, so downgrading to the previous build G990U1UESNIZE2 is still possible. Samsung still serves this file.

Model
SM-G990U1
Android
Android 16
Type
Security
Bootloader bit
23
First released
Jul 8, 2026
Regions
14

Rollout timeline by region

The date each region code (CSC) first received G990U1UESNIZF3, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)Jul 8, 2026day 0G990U1UESNIZF3/G990U1OYMNIZF3/G990U1UESNIZF3
AIOUSA (Cricket)Jul 8, 2026day 0G990U1UESNIZF3/G990U1OYMNIZF3/G990U1UESNIZF3
ATTUSA (AT&T)Jul 8, 2026day 0G990U1UESNIZF3/G990U1OYMNIZF3/G990U1UESNIZF3
CCTUSA (Comcast)Jul 8, 2026day 0G990U1UESNIZF3/G990U1OYMNIZF3/G990U1UESNIZF3
DSAUSAJul 8, 2026day 0G990U1UESNIZF3/G990U1OYMNIZF3/G990U1UESNIZF3
DSHUSAJul 8, 2026day 0G990U1UESNIZF3/G990U1OYMNIZF3/G990U1UESNIZF3
LRAUSA (Bluegrass)Jul 8, 2026day 0G990U1UESNIZF3/G990U1OYMNIZF3/G990U1UESNIZF3
TFNUSA (TracFone)Jul 8, 2026day 0G990U1UESNIZF3/G990U1OYMNIZF3/G990U1UESNIZF3
TMBUSA (T-Mobile)Jul 8, 2026day 0G990U1UESNIZF3/G990U1OYMNIZF3/G990U1UESNIZF3
TMKUSA (MetroPCS)Jul 8, 2026day 0G990U1UESNIZF3/G990U1OYMNIZF3/G990U1UESNIZF3
USCUSA (US Cellular)Jul 8, 2026day 0G990U1UESNIZF3/G990U1OYMNIZF3/G990U1UESNIZF3
VZWUSA (Verizon)Jul 8, 2026day 0G990U1UESNIZF3/G990U1OYMNIZF3/G990U1UESNIZF3
XAAUSA (unlocked)Jul 8, 2026day 0G990U1UESNIZF3/G990U1OYMNIZF3/G990U1UESNIZF3
XARUSA (Cellular South)Jul 8, 2026day 0G990U1UESNIZF3/G990U1OYMNIZF3/G990U1UESNIZF3

Download and release notes

samloader download -m SM-G990U1 -r XAA -v G990U1UESNIZF3/G990U1OYMNIZF3/G990U1UESNIZF3

Samsung's release notes and security patch level for this update: SM-G990U1 / XAA on doc.samsungmobile.com. What each part of the build number means: decode G990U1UESNIZF3.