G955USQU8DZE3 – Galaxy S8+ firmware
Build G955USQU8DZE3 is a feature update for the Galaxy S8+ (SM-G955U)
on Android 9. It first appeared on Samsung's servers on Jun 17, 2026 (method) and has reached
1 region so far. It keeps bootloader bit 8, so downgrading to the previous build G955USQU8DZE4 is still possible. Samsung still serves this file.
- Model
- SM-G955U
- Android
- Android 9
- Type
- Feature
- Bootloader bit
- 8
- First released
- Jun 17, 2026
- Regions
- 1
Not yet released in 11 regions that are still on an older build: ACG, ATT, BST, CCT, LRA, SPR, TFN, USC, VMU, VZW, XAS.
Rollout timeline by region
The date each region code (CSC) first received G955USQU8DZE3, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
TMB | USA (T-Mobile) | Jun 17, 2026 | day 0 | G955USQU8DZE3/G955UOYN8DZE3/G955USQU8DZE3 |
Download and release notes
samloader download -m SM-G955U -r TMB -v G955USQU8DZE3/G955UOYN8DZE3/G955USQU8DZE3Samsung's release notes and security patch level for this update: SM-G955U / TMB on doc.samsungmobile.com. What each part of the build number means: decode G955USQU8DZE3.