X736NKOS6BZF4 – Galaxy Tab S11 5G firmware
Build X736NKOS6BZF4 is a security update for the Galaxy Tab S11 5G (SM-X736N)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Jun 24, 2026 (method) and has reached
1 region so far. It raises the bootloader bit from 5 to 6: once installed, the device no longer accepts firmware with bit 5 or lower, so a downgrade to X736NKOU5BZE3 is blocked. Samsung still serves this file.
- Model
- SM-X736N
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 6
- First released
- Jun 24, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received X736NKOS6BZF4, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
KOO | South Korea | Jun 24, 2026 | day 0 | X736NKOS6BZF4/X736NKOO6BZF4/X736NKOS6BZF4 |
Download and release notes
samloader download -m SM-X736N -r KOO -v X736NKOS6BZF4/X736NKOO6BZF4/X736NKOS6BZF4Samsung's release notes and security patch level for this update: SM-X736N / KOO on doc.samsungmobile.com. What each part of the build number means: decode X736NKOS6BZF4.