G955FXXUCDZE9 – Galaxy S8+ firmware
Build G955FXXUCDZE9 is a feature update for the Galaxy S8+ (SM-G955F)
on Android 9. It first appeared on Samsung's servers on Aug 12, 2026 (method) and has reached
3 regions so far. It keeps bootloader bit 12, so downgrading to the previous build G955FXXUCDZE7 is still possible. Samsung still serves this file.
- Model
- SM-G955F
- Android
- Android 9
- Type
- Feature
- Bootloader bit
- 12
- First released
- Aug 12, 2026
- Regions
- 3
Rollout timeline by region
The date each region code (CSC) first received G955FXXUCDZE9, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
DBT | Germany | Aug 12, 2026 | day 0 | G955FXXUCDZE9/G955FOXMCDUD1/G955FXXUCDUD1 |
DTM | Germany (Telekom) | Aug 12, 2026 | day 0 | G955FXXUCDZE9/G955FODXCDUD3/G955FXXUCDUD1 |
VD2 | Germany (Vodafone) | Aug 12, 2026 | day 0 | G955FXXUCDZE9/G955FOVFCDUD3/G955FXXUCDUD1 |
Download and release notes
samloader download -m SM-G955F -r DBT -v G955FXXUCDZE9/G955FOXMCDUD1/G955FXXUCDUD1Samsung's release notes and security patch level for this update: SM-G955F / DBT on doc.samsungmobile.com. What each part of the build number means: decode G955FXXUCDZE9.