G988USQSCHXL1 – Galaxy S20 Ultra 5G firmware
Build G988USQSCHXL1 is a security update for the Galaxy S20 Ultra 5G (SM-G988U)
on Android 13 (One UI 5). It first appeared on Samsung's servers on Jan 20, 2025 (method) and has reached
6 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 G988USQSBHXJ3 is blocked. Samsung still serves this file.
- Model
- SM-G988U
- Android
- Android 13
- Type
- Security
- Bootloader bit
- 12
- First released
- Jan 20, 2025
- Regions
- 6
Rollout timeline by region
The date each region code (CSC) first received G988USQSCHXL1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
ATT | USA (AT&T) | Jan 20, 2025 | day 0 | G988USQSCHXL1/G988UOYNCHXL1/G988USQSCHXL1 |
CCT | USA (Comcast) | Jan 21, 2025 | +1 day | G988USQSCHXL1/G988UOYNCHXL1/G988USQSCHXL1 |
SPR | USA (Sprint) | Jan 21, 2025 | +1 day | G988USQSCHXL1/G988UOYNCHXL1/G988USQSCHXL1 |
TMB | USA (T-Mobile) | Jan 21, 2025 | +1 day | G988USQSCHXL1/G988UOYNCHXL1/G988USQSCHXL1 |
VZW | USA (Verizon) | Jan 22, 2025 | +2 days | G988USQSCHXL1/G988UOYNCHXL1/G988USQSCHXL1 |
USC | USA (US Cellular) | Feb 4, 2025 | +15 days | G988USQSCHXL1/G988UOYNCHXL1/G988USQSCHXL1 |
Download and release notes
samloader download -m SM-G988U -r ATT -v G988USQSCHXL1/G988UOYNCHXL1/G988USQSCHXL1Samsung's release notes and security patch level for this update: SM-G988U / ATT on doc.samsungmobile.com. What each part of the build number means: decode G988USQSCHXL1.