G988NKSS7IYA1 – Galaxy S20 UItra 5G firmware
Build G988NKSS7IYA1 is a security update for the Galaxy S20 UItra 5G (SM-G988N)
on Android 13 (One UI 5). It first appeared on Samsung's servers on Jan 23, 2025 (method) and has reached
4 regions so far. It raises the bootloader bit from 6 to 7: once installed, the device no longer accepts firmware with bit 6 or lower, so a downgrade to G988NKSS6IXJ1 is blocked. Samsung still serves this file.
- Model
- SM-G988N
- Android
- Android 13
- Type
- Security
- Bootloader bit
- 7
- First released
- Jan 23, 2025
- Regions
- 4
Rollout timeline by region
The date each region code (CSC) first received G988NKSS7IYA1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
KOO | South Korea | Jan 23, 2025 | day 0 | G988NKSS7IYA1/G988NOKR7IYA1/G988NKSS7IYA1 |
KTC | South Korea (KT) | Jan 23, 2025 | day 0 | G988NKSS7IYA1/G988NOKR7IYA1/G988NKSS7IYA1 |
LUC | South Korea (LG U+) | Jan 23, 2025 | day 0 | G988NKSS7IYA1/G988NOKR7IYA1/G988NKSS7IYA1 |
SKC | South Korea (SKT) | Jan 23, 2025 | day 0 | G988NKSS7IYA1/G988NOKR7IYA1/G988NKSS7IYA1 |
Download and release notes
samloader download -m SM-G988N -r KOO -v G988NKSS7IYA1/G988NOKR7IYA1/G988NKSS7IYA1Samsung's release notes and security patch level for this update: SM-G988N / KOO on doc.samsungmobile.com. What each part of the build number means: decode G988NKSS7IYA1.