Galaxy S8+ SM-G955U1 updates & firmware
This page tracks every software update Samsung's update servers list for the Samsung Galaxy S8+ (SM-G955U1). The latest stable build is G955U1UEU8DZE2 (Android 9, feature update), first released on Jun 17, 2026. Samsung has published 37 stable builds for this model since May 22, 2017: 18 security and 19 feature updates, from Android 7 to Android 9. The current bootloader (binary) version is 8. A device on bit 8 only accepts firmware with bit 8 or higher – see downgrading and the bootloader bit.
Rollout: build G955U1UEU8DZE2 (Android 9) is live in 11 of 14 regions, first released on Jun 17, 2026 in ACG (USA (C Spire)). Still waiting: BST, VMU, XAS.
- Latest build
G955U1UEU8DZE2- Released
- Jun 17, 2026
- Android
- Android 9
- Bootloader bit
- 8
- Regions
- 14
- Stable builds
- 37
Update policy
Samsung has not published an update commitment for the Galaxy S8+. According to our data it is on Android 9, last build released Jun 17, 2026. No new firmware has appeared on Samsung's servers since Jun 17, 2026.
Compare all models: Samsung update policy by model.
Latest firmware by region (CSC)
Samsung builds firmware per region code (CSC). Pick the code that matches your device – it is shown under Settings › About phone › Software information › Service provider software version. Follow a code for its complete history.
| CSC | Region | Latest build | Android | Released | Builds |
|---|---|---|---|---|---|
ACG | USA (C Spire) | G955U1UEU8DZE2 | Android 9 | Jun 17, 2026 | 29 |
AIO | USA (Cricket) | G955U1UEU8DZE2 | Android 9 | Jun 17, 2026 | 37 |
ATT | USA (AT&T) | G955U1UEU8DZE2 | Android 9 | Jun 17, 2026 | 37 |
BST | USA (Boost) | G955U1UEU8DUG4 | Android 9 | Aug 22, 2021 | 33 |
LRA | USA (Bluegrass) | G955U1UEU8DZE2 | Android 9 | Jun 17, 2026 | 35 |
SPR | USA (Sprint) | G955U1UEU8DZE2 | Android 9 | Jun 17, 2026 | 35 |
TFN | USA (TracFone) | G955U1UEU8DZE2 | Android 9 | Jun 17, 2026 | 36 |
TMB | USA (T-Mobile) | G955U1UEU8DZE2 | Android 9 | Jun 17, 2026 | 34 |
TMK | USA (MetroPCS) | G955U1UEU8DZE2 | Android 9 | Jun 17, 2026 | 34 |
USC | USA (US Cellular) | G955U1UEU8DZE2 | Android 9 | Jun 17, 2026 | 36 |
VMU | USA (Virgin) | G955U1UEU8DUG4 | Android 9 | Aug 22, 2021 | 33 |
VZW | USA (Verizon) | G955U1UEU8DZE2 | Android 9 | Jun 17, 2026 | 36 |
XAA | USA (unlocked) | G955U1UEU8DZE2 | Android 9 | Jun 17, 2026 | 37 |
XAS | USA (Sprint) | G955U1UEU8DUG4 | Android 9 | Aug 22, 2021 | 33 |
Firmware history (37 builds)
Every stable build (PDA version) Samsung has published for the SM-G955U1, newest first. “Released” is the earliest date the build appeared on Samsung's servers in any region (how dates work). “pulled” means Samsung no longer serves the file for that build, usually because newer builds replaced it (details).
| Build (PDA) | Released | Android | Type | Bit | Regions | File |
|---|---|---|---|---|---|---|
G955U1UEU8DZE2 | Jun 17, 2026 | Android 9 | Feature | 8 | 11 | on server |
G955U1UEU8DVD4 | Apr 25, 2022 | Android 9 | Feature | 8 | 5 | on server |
G955U1UEU8DUG4 | Aug 22, 2021 | Android 9 | Feature | 8 | 14 | on server |
G955U1UEU8DUD3 | May 9, 2021 | Android 9 | Feature | 8 | 14 | on server |
G955U1UES8DUB1 | Mar 11, 2021 | Android 9 | Security | 8 | 14 | on server |
G955U1UES8DTJ1 | Oct 29, 2020 | Android 9 | Security | 8 | 14 | on server |
G955U1UES8DTI3 | Sep 25, 2020 | Android 9 | Security | 8 | 13 | on server |
G955U1UEU7DTF4 | Jul 29, 2020 | Android 9 | Feature | 7 | 13 | on server |
G955U1UES7DTC1 | Mar 22, 2020 | Android 9 | Security | 7 | 14 | on server |
G955U1UES7DTB2 | Feb 20, 2020 | Android 9 | Security | 7 | 14 | on server |
G955U1UEU7DSL5 | Jan 28, 2020 | Android 9 | Feature | 7 | 14 | on server |
G955U1UES7DSL2 | Dec 22, 2019 | Android 9 | Security | 7 | 13 | on server |
G955U1UES7DSK4 | Nov 21, 2019 | Android 9 | Security | 7 | 13 | on server |
G955U1UEU6DSJ4 | Nov 12, 2019 | Android 9 | Feature | 6 | 13 | on server |
G955U1UES6DSJ1 | Oct 22, 2019 | Android 9 | Security | 6 | 14 | on server |
G955U1UES6DSI1 | Sep 29, 2019 | Android 9 | Security | 6 | 14 | on server |
G955U1UES6DSH1 | Aug 26, 2019 | Android 9 | Security | 6 | 12 | pulled |
G955U1UES6DSG1 | Jul 28, 2019 | Android 9 | Security | 6 | 14 | pulled |
G955U1UES5DSF3 | Jul 1, 2019 | Android 9 | Security | 5 | 12 | pulled |
G955U1UEU5DSD5 | Apr 24, 2019 | Android 9 | Feature | 5 | 14 | pulled |
G955U1UEU5DSC1 | Apr 7, 2019 | Android 9 | Feature | 5 | 9 | on server |
G955U1UES5CSB2 | Mar 4, 2019 | Android 8 | Security | 5 | 10 | pulled |
G955U1UEU5CRK3 | Jan 1, 2019 | Android 8 | Feature | 5 | 14 | pulled |
G955U1UES5CRL2 | Dec 30, 2018 | Android 8 | Security | 5 | 14 | pulled |
G955U1UEU5CRJ2 | Oct 30, 2018 | Android 8 | Feature | 5 | 14 | pulled |
G955U1UES5CRI1 | Sep 26, 2018 | Android 8 | Security | 5 | 14 | pulled |
G955U1UEU5CRH3 | Sep 3, 2018 | Android 8 | Feature | 5 | 14 | pulled |
G955U1UES5CRF5 | Jul 18, 2018 | Android 8 | Security | 5 | 11 | pulled |
G955U1UES3CRE2 | May 23, 2018 | Android 8 | Security | 3 | 14 | pulled |
G955U1UEU3CRD4 | May 8, 2018 | Android 8 | Feature | 3 | 14 | pulled |
G955U1UEU2CRB9 | Apr 3, 2018 | Android 8 | Feature | 2 | 14 | pulled |
G955U1UES2AQL1 | Dec 26, 2017 | Android 7 | Security | 2 | 14 | pulled |
G955U1UEU2AQK2 | Nov 28, 2017 | Android 7 | Feature | 2 | 14 | pulled |
G955U1UEU1AQH3 | Aug 29, 2017 | Android 7 | Feature | 1 | 14 | pulled |
G955U1UEU1AQG2 | Jul 27, 2017 | Android 7 | Feature | 1 | 14 | pulled |
G955U1UEU1AQE3 | Jun 12, 2017 | Android 7 | Feature | 1 | 14 | pulled |
G955U1UEU1AQDC | May 22, 2017 | Android 7 | Feature | 1 | 14 | pulled |
How to download SM-G955U1 firmware
We do not host firmware. Download it directly from Samsung's servers with a free open-source tool, for example samloader:
samloader download -m SM-G955U1 -r XAAReplace XAA with your region code. Step-by-step instructions, including a graphical alternative:
How to download Samsung firmware.
Changelog and security patch level
Samsung publishes the release notes for each update, including the security patch level, on its own site. They are listed per region – for example SM-G955U1 / XAA release notes on doc.samsungmobile.com. Each region page here links to the notes for that code. We don't show the patch level ourselves because Samsung's update servers don't report it (why).