N986NKSS8HYD1 – Galaxy Note20 Ultra 5G firmware
Build N986NKSS8HYD1 is a security update for the Galaxy Note20 Ultra 5G (SM-N986N)
on Android 13 (One UI 5). It first appeared on Samsung's servers on Apr 23, 2025 (method) and has reached
4 regions so far. It raises the bootloader bit from 7 to 8: once installed, the device no longer accepts firmware with bit 7 or lower, so a downgrade to N986NKSS7HYA1 is blocked. Samsung still serves this file.
- Model
- SM-N986N
- Android
- Android 13
- Type
- Security
- Bootloader bit
- 8
- First released
- Apr 23, 2025
- Regions
- 4
Rollout timeline by region
The date each region code (CSC) first received N986NKSS8HYD1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
KOO | South Korea | Apr 23, 2025 | day 0 | N986NKSS8HYD1/N986NOKR8HYD1/N986NKSS8HYD1 |
KTC | South Korea (KT) | Apr 23, 2025 | day 0 | N986NKSS8HYD1/N986NOKR8HYD1/N986NKSS8HYD1 |
LUC | South Korea (LG U+) | Apr 23, 2025 | day 0 | N986NKSS8HYD1/N986NOKR8HYD1/N986NKSS8HYD1 |
SKC | South Korea (SKT) | Apr 23, 2025 | day 0 | N986NKSS8HYD1/N986NOKR8HYD1/N986NKSS8HYD1 |
Download and release notes
samloader download -m SM-N986N -r KOO -v N986NKSS8HYD1/N986NOKR8HYD1/N986NKSS8HYD1Samsung's release notes and security patch level for this update: SM-N986N / KOO on doc.samsungmobile.com. What each part of the build number means: decode N986NKSS8HYD1.