G981USQSCHXL1 – Galaxy S20 5G firmware
Build G981USQSCHXL1 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 Jan 20, 2025 (method) and has reached
5 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 G981USQSBHXJ3 is blocked. Samsung still serves this file.
- Model
- SM-G981U
- Android
- Android 13
- Type
- Security
- Bootloader bit
- 12
- First released
- Jan 20, 2025
- Regions
- 5
Rollout timeline by region
The date each region code (CSC) first received G981USQSCHXL1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
ATT | USA (AT&T) | Jan 20, 2025 | day 0 | G981USQSCHXL1/G981UOYNCHXL1/G981USQSCHXL1 |
SPR | USA (Sprint) | Jan 20, 2025 | day 0 | G981USQSCHXL1/G981UOYNCHXL1/G981USQSCHXL1 |
TMB | USA (T-Mobile) | Jan 20, 2025 | day 0 | G981USQSCHXL1/G981UOYNCHXL1/G981USQSCHXL1 |
TMK | USA (MetroPCS) | Jan 20, 2025 | day 0 | G981USQSCHXL1/G981UOYNCHXL1/G981USQSCHXL1 |
USC | USA (US Cellular) | Feb 4, 2025 | +15 days | G981USQSCHXL1/G981UOYNCHXL1/G981USQSCHXL1 |
Download and release notes
samloader download -m SM-G981U -r ATT -v G981USQSCHXL1/G981UOYNCHXL1/G981USQSCHXL1Samsung's release notes and security patch level for this update: SM-G981U / ATT on doc.samsungmobile.com. What each part of the build number means: decode G981USQSCHXL1.