N981U1UESCHYD1 – Galaxy Note20 5G firmware

Build N981U1UESCHYD1 is a security update for the Galaxy Note20 5G (SM-N981U1) on Android 13 (One UI 5). It first appeared on Samsung's servers on Apr 27, 2025 (method) and has reached 16 regions so far. It raises the bootloader bit from 11 to 12: once installed, the device no longer accepts firmware with bit 11 or lower, so a downgrade to N981U1UESBHXL1 is blocked. Samsung still serves this file.

Model
SM-N981U1
Android
Android 13
Type
Security
Bootloader bit
12
First released
Apr 27, 2025
Regions
16

Rollout timeline by region

The date each region code (CSC) first received N981U1UESCHYD1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACGUSA (C Spire)Apr 27, 2025day 0N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1
AIOUSA (Cricket)Apr 27, 2025day 0N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1
ATTUSA (AT&T)Apr 27, 2025day 0N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1
BSTUSA (Boost)Apr 27, 2025day 0N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1
CCTUSA (Comcast)Apr 27, 2025day 0N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1
DSHUSAApr 27, 2025day 0N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1
LRAUSA (Bluegrass)Apr 27, 2025day 0N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1
SPRUSA (Sprint)Apr 27, 2025day 0N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1
TFNUSA (TracFone)Apr 27, 2025day 0N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1
TMBUSA (T-Mobile)Apr 27, 2025day 0N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1
TMKUSA (MetroPCS)Apr 27, 2025day 0N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1
USCUSA (US Cellular)Apr 27, 2025day 0N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1
VZWUSA (Verizon)Apr 27, 2025day 0N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1
XAAUSA (unlocked)Apr 27, 2025day 0N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1
XARUSA (Cellular South)Apr 27, 2025day 0N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1
XASUSA (Sprint)Apr 27, 2025day 0N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1

Download and release notes

samloader download -m SM-N981U1 -r XAA -v N981U1UESCHYD1/N981U1OYMCHYD1/N981U1UESCHYD1

Samsung's release notes and security patch level for this update: SM-N981U1 / XAA on doc.samsungmobile.com. What each part of the build number means: decode N981U1UESCHYD1.