Download Samsung Firmware SM-R861
Samsung Galaxy Watch FE
The latest firmware for Samsung Galaxy Watch FE (SM-R861) is R861XXS2CZG3 with Android 16, released on August 24, 2026 for 69 regions (CSC). Every official firmware build for SM-R861, newest first: one row per build with all regions (CSC) that received it.
- Latest build
- R861XXS2CZG3
- Builds
- 13 builds
- Regions (CSC)
- 69 regions
Firmware builds for SM-R861
- 69 regions
- 69 regions
- 69 regions
- 69 regions
- 69 regions
- 69 regions
- KOO
- XAA
- 69 regions
- BRICOOTGY
- 66 regions
- 69 regions
- 64 regions
SM-R861 update history
SM-R861 started on Android 13 and has received 2 major Android upgrades; it now runs Android 16. The newest build, R861XXS2CZG3, was released on August 24, 2026 with the August 2026 security patch. Over the last 12 months SM-R861 received 5 builds, spread over 5 different months.
Device specifications
- Launched with
- Wear OS
- Display diagonal
- 3.05 cm (1.2")
- Display technology
- AMOLED
- Display resolution
- 396 x 396 pixels
- Processor frequency
- 1180 MHz
- RAM
- 1500 MB
- Flash memory
- 16 GB
- Battery capacity
- 247 mAh
- Weight
- 26.6 g
- Waterproof up to
- 50 m
- Band colour
- Blue
Changelog for SM-R861
• 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.
• 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...
Show 6 older builds
• Stability and reliability
Device behavior has been improved.
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,...
1 retail code (SKU)
Box codes of SM-R861 for different colors and markets. Firmware is chosen by the model code SM-R861 and your region (CSC), not by the SKU.
- SM-R861NZSADBT
Similar Models
Samsung Galaxy Buds4
SM-R540N
Samsung Galaxy Buds4 Pro
SM-R640N
Samsung Galaxy Buds3 Pro,White
SM-R630N
Samsung Galaxy Buds3 FE, Gray
SM-R420N
Samsung Galaxy Buds3,White
SM-R530N
Samsung Galaxy Watch5 Small - BT Silver
SM-R900N
Samsung Galaxy Watch5 Large - BT Silver
SM-R910N
Samsung Galaxy Watch3, Mystic Silver
SM-R840N
Frequently Asked Questions
What is the latest Android version for SM-R861?
The newest firmware for SM-R861 runs Android 16: build R861XXS2CZG3, released on August 24, 2026.
When did SM-R861 get its last update?
The latest build for SM-R861, R861XXS2CZG3, was released on August 24, 2026 (2 months ago).
How often does SM-R861 get updates?
Over the last 12 months SM-R861 received 5 builds, with at least one new build in 5 different months.
Is the firmware for SM-R861 official?
Yes, all firmware files for SM-R861 are 100% official, original, and obtained directly from Samsung servers.
How to flash Samsung SM-R861 using Odin?
To flash SM-R861, 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-R861?
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-R861.