G981USQSCHYC1 – Galaxy S20 5G firmware

Build G981USQSCHYC1 is a security update for the Galaxy S20 5G (SM-G981U) on Android 13 (One UI 5). It first appeared on Samsung's servers on Apr 2, 2025 (method) and has reached 5 regions so far. It keeps bootloader bit 12, so downgrading to the previous build G981USQSCHXL1 is still possible. Samsung still serves this file.

Model
SM-G981U
Android
Android 13
Type
Security
Bootloader bit
12
First released
Apr 2, 2025
Regions
5

Not yet released in 3 regions that are still on an older build: BST, DSH, XAS.

Rollout timeline by region

The date each region code (CSC) first received G981USQSCHYC1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
TMKUSA (MetroPCS)Apr 2, 2025day 0G981USQSCHYC1/G981UOYNCHYC1/G981USQSCHYC1
SPRUSA (Sprint)Apr 2, 2025day 0G981USQSCHYC1/G981UOYNCHYC1/G981USQSCHYC1
TMBUSA (T-Mobile)Apr 2, 2025day 0G981USQSCHYC1/G981UOYNCHYC1/G981USQSCHYC1
ATTUSA (AT&T)Apr 2, 2025day 0G981USQSCHYC1/G981UOYNCHYC1/G981USQSCHYC1
USCUSA (US Cellular)Apr 8, 2025+6 daysG981USQSCHYC1/G981UOYNCHYC1/G981USQSCHYC1

Download and release notes

samloader download -m SM-G981U -r TMK -v G981USQSCHYC1/G981UOYNCHYC1/G981USQSCHYC1

Samsung's release notes and security patch level for this update: SM-G981U / TMK on doc.samsungmobile.com. What each part of the build number means: decode G981USQSCHYC1.