Galaxy Watch4 SM-R865U updates & firmware
This page tracks every software update Samsung's update servers list for the Samsung Galaxy Watch4 (SM-R865U). The latest stable build is R865USQU1GWB2 (Android 11, feature update), first released on Feb 27, 2023. Samsung has published 23 stable builds for this model since Feb 27, 2023: 3 security and 20 feature updates, from Android 11 to Android 16. The current bootloader (binary) version is 1. A device on bit 1 only accepts firmware with bit 1 or higher – see downgrading and the bootloader bit.
Rollout: build R865USQU1GWB2 (Android 11 (One UI 3)) is live in all 1 regions, first released on Feb 27, 2023 in XAA (USA (unlocked)).
- Latest build
R865USQU1GWB2- Released
- Feb 27, 2023
- Android
- Android 11
- Bootloader bit
- 1
- Regions
- 1
- Stable builds
- 23
Update policy
The Galaxy Watch4 no longer receives updates: the last firmware appeared on Feb 27, 2023, on Android 16 (One UI 8).
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 |
|---|---|---|---|---|---|
XAA | USA (unlocked) | R865USQU1GWB2 | Android 11 | Feb 27, 2023 | 23 |
Firmware history (23 builds)
Every stable build (PDA version) Samsung has published for the SM-R865U, 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 |
|---|---|---|---|---|---|---|
R865USQU1GWB2 | Feb 27, 2023 | Android 11 | Feature | 1 | 1 | on server |
R865USQS1IYE1 | – | Android 14 | Security | 1 | 1 | on server |
R865USQS2JZE1 | – | Android 16 | Security | 2 | 1 | on server |
R865USQS2JZG3 | – | Android 16 | Security | 2 | 1 | on server |
R865USQU1AUGC | – | Android 11 | Feature | 1 | 1 | on server |
R865USQU1BUH9 | – | Android 11 | Feature | 1 | 1 | on server |
R865USQU1BUI5 | – | Android 11 | Feature | 1 | 1 | on server |
R865USQU1DUJC | – | Android 11 | Feature | 1 | 1 | on server |
R865USQU1EVA9 | – | Android 11 | Feature | 1 | 1 | on server |
R865USQU1FVC8 | – | Android 11 | Feature | 1 | 1 | on server |
R865USQU1FVD4 | – | Android 11 | Feature | 1 | 1 | on server |
R865USQU1GVH2 | – | Android 11 | Feature | 1 | 1 | on server |
R865USQU1GVK6 | – | Android 11 | Feature | 1 | 1 | on server |
R865USQU1GWA3 | – | Android 11 | Feature | 1 | 1 | on server |
R865USQU1GWDA | – | Android 11 | Feature | 1 | 1 | on server |
R865USQU1HWH3 | – | Android 13 | Feature | 1 | 1 | on server |
R865USQU1HWL1 | – | Android 13 | Feature | 1 | 1 | on server |
R865USQU1HXB7 | – | Android 13 | Feature | 1 | 1 | on server |
R865USQU1IXK1 | – | Android 14 | Feature | 1 | 1 | on server |
R865USQU1IYCD | – | Android 14 | Feature | 1 | 1 | on server |
R865USQU1IYI1 | – | Android 14 | Feature | 1 | 1 | on server |
R865USQU1JYL6 | – | Android 16 | Feature | 1 | 1 | on server |
R865USQU2JZB6 | – | Android 16 | Feature | 2 | 1 | on server |
How to download SM-R865U 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-R865U -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-R865U / 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).