Download Samsung Firmware SM-R905U
Samsung Galaxy Watch5
The latest firmware for Samsung Galaxy Watch5 (SM-R905U) is R905USQS2DZG3 with Android 16, released on August 13, 2026 for 1 region (CSC). Every official firmware build for SM-R905U, newest first: one row per build with all regions (CSC) that received it.
- Latest build
- R905USQS2DZG3
- Builds
- 10 builds
- Regions (CSC)
- 1 region
Firmware builds for SM-R905U
SM-R905U update history
SM-R905U started on Android 13 and has received 2 major Android upgrades; it now runs Android 16. The newest build, R905USQS2DZG3, was released on August 13, 2026 with the August 2026 security patch. Over the last 12 months SM-R905U received 4 builds, spread over 4 different months.
Device specifications
- Launched with
- Wear OS
- Display diagonal
- 3.05 cm (1.2")
- Display technology
- OLED
- Display resolution
- 396 x 396 pixels
- RAM
- 1500 MB
- Flash memory
- 16 GB
- Battery capacity
- 284 mAh
- Weight
- 28.7 g
- Waterproof up to
- 50 m
- Band colour
- Pink gold
Specifications of SM-R905F, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.
Changelog for SM-R905U
• Security
The device is protected with improved security.
These changes may vary depending on the model, country, or network operator of the customer environment.
• Security
The device is protected with improved security.
These changes may vary depending on the model, country, or network operator of the customer environment.
• Stability and reliability
Device behavior has been improved.
• Security
The device is protected with improved security.
These changes may vary depending on the model, country, or network operator of the customer environment.
Stay on top of important tasks with the Now bar
Check the information you need right now and start essential features straight from your watch face. Ongoing tasks will appear in the Now bar at the bottom of your watch face so you can check key information quickly.
Do more with double pinch
Just pinch your thumb and index finger together twice to scroll through notifications, control music, take pictures, and more. You can also customize what happens wh...
• Stability and reliability
Device behavior has been improved.
These changes may vary depending on the model, country, or network operator of the customer environment.
Show 14 older builds
• Security
The device is protected with improved security.
These changes may vary depending on the model, country, or network operator of the customer environment.
• Stability and reliability
The stability has been improved.
• Security
The device is protected with improved security.
Discover new watch faces
Express your individual style with these new premium watch faces. Spatial Number provides an analog clock on top of large bold digits. Simple Digital is for people who prefer a minimalist design. Ultra Info Board lets you quickly check your workout information. You can find these watch faces in the new featured watch faces section of the Galaxy Wearable app. You can also browse watch faces by keyword including colors,...
• Workout Tracker Support
By connecting your Galaxy Watch to your Samsung TV, you can view workout data from your watch on your TV screen.
※ Supported products and connection requirements
. Supports Samsung TV/Smart Monitor/Projector/Life Style products that are newly released from 2024. However, this may vary depending on Samsung policy.
. It is supported on the condition that the same Samsung account is registered on both the Samsung TV and the Galaxy Watch.
. For more information, please v...
Watch faces and tiles
• Add watch faces and tiles more easily
A new vertical layout makes it easier to find the watch faces and tiles that are right for you.
• Check the battery level of all your devices
The new Battery tile lets you quickly check the battery level of your watch, phone, and Galaxy Buds.
• Improved Buds controller tile
You can now turn 360 audio on and off from the Buds controller tile if your Buds support 360 audio.
• Quick access to timers
You can st...
• Samsung Health
The application will be updated to the latest version.
- 'Predict period with skin temp' feature will be added to Cycle tracking.
• Improved system stability and reliability
The stability has been improved.
• Stability and reliability
The stability has been improved.
• New Camera Controller feature added
Change zoom on your phone camera remotely through pinching in or out on the screen, or through rotating the bezel.
※ This feature is only supported on flagship models released after Samsung Galaxy S20 or Z Flip running at least One UI 5.1.
• Samsung Members
A new “Connected device diagnostics” option has been added to check the proper performance of the Galaxy Watch's battery status, touch screen function, etc. on the connected phone.
※ Please update Samsung...
• Watch Face
Newly designed Ball Watch face is added.
• Stability and reliability
Stability codes applied to improve notifications and device behavior.
• Security
The device is protected with improved security.
• GPS
The stability has been improved.
• Improved system stability and reliability
Stabilization codes for watch operation have been applied.
• Stability and reliability
The stability has been improved.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
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SM-R630N
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Frequently Asked Questions
What is the latest Android version for SM-R905U?
The newest firmware for SM-R905U runs Android 16: build R905USQS2DZG3, released on August 13, 2026.
When did SM-R905U get its last update?
The latest build for SM-R905U, R905USQS2DZG3, was released on August 13, 2026 (2 months ago).
How often does SM-R905U get updates?
Over the last 12 months SM-R905U received 4 builds, with at least one new build in 4 different months.
Is the firmware for SM-R905U official?
Yes, all firmware files for SM-R905U are 100% official, original, and obtained directly from Samsung servers.
How to flash Samsung SM-R905U using Odin?
To flash SM-R905U, you need to download the appropriate firmware, put your device into Download Mode, and use the Odin tool to load the BL, AP, CP, and CSC files.
Can I downgrade the Android version on SM-R905U?
Downgrading is only possible if the bootloader version (binary bit) of the old firmware matches the current one. Always check the binary version before flashing SM-R905U.