T866NKOS5DWH5 – Galaxy Tab S6 5G firmware
Build T866NKOS5DWH5 is a security update for the Galaxy Tab S6 5G (SM-T866N)
on Android 12 (One UI 4). It first appeared on Samsung's servers on Aug 30, 2023 (method) and has reached
1 region so far. It raises the bootloader bit from 4 to 5: once installed, the device no longer accepts firmware with bit 4 or lower, so a downgrade to T866NKOU4DWC3 is blocked. Samsung still serves this file.
- Model
- SM-T866N
- Android
- Android 12
- Type
- Security
- Bootloader bit
- 5
- First released
- Aug 30, 2023
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received T866NKOS5DWH5, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
KOO | South Korea | Aug 30, 2023 | day 0 | T866NKOS5DWH5/T866NKOO5DWH5/T866NKOS5DWH5 |
Download and release notes
samloader download -m SM-T866N -r KOO -v T866NKOS5DWH5/T866NKOO5DWH5/T866NKOS5DWH5Samsung's release notes and security patch level for this update: SM-T866N / KOO on doc.samsungmobile.com. What each part of the build number means: decode T866NKOS5DWH5.