Galaxy Watch4

Download Samsung Firmware SM-R860

Samsung Galaxy Watch4

The latest firmware for Samsung Galaxy Watch4 (SM-R860) is R860XXS2JZG3 with Android 16, released on August 25, 2026 for 17 regions (CSC). Every official firmware build for SM-R860, newest first: one row per build with all regions (CSC) that received it.

Latest build
R860XXS2JZG3 Android 16 · 2 months ago
Builds
41 builds
Regions (CSC)
18 regions

Firmware builds for SM-R860

Each firmware build has its own page at https://samfirm.shop/build/{PDA}, where {PDA} is the build number from the list above. Example: https://samfirm.shop/build/R860XXS2JZG3

SM-R860 update history

SM-R860 started on Android 11 and has received 3 major Android upgrades; it now runs Android 16. The newest build, R860XXS2JZG3, was released on August 25, 2026 with the August 2026 security patch. That patch (SMR Aug-2026) fixes 54 vulnerabilities, 8 of them critical. Over the last 12 months SM-R860 received 20 builds, spread over 8 different months.

Device specifications

Launched with
Wear OS
Display diagonal
3.05 cm (1.2")
Display technology
OLED
Display resolution
396 x 396 pixels
Processor frequency
1.8 MHz
RAM
1500 MB
Flash memory
16 GB
Battery capacity
247 mAh
Weight
25.9 g
Band material
Silicone
Band colour
Black

Changelog for SM-R860

• 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.

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.

• Stability and reliability
Device behavior has been improved.

These changes may vary depending on the model, country, or network operator of the customer environment.

One UI 8 Watch Upgrade
Get things done

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 19 older builds

• 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.

One UI 8 Watch Upgrade
Get things done

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.

• 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.

• Stability and reliability
The stability has been improved.
• Security
The device is protected with improved security.

One UI 6 Watch Upgrade
A new look for your watch

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,...

• Stability and reliability
The stability has been improved.

• 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...

• Stability and reliability
The stability has been improved.

1 retail code (SKU)

Box codes of SM-R860 for different colors and markets. Firmware is chosen by the model code SM-R860 and your region (CSC), not by the SKU.

  • SM-R860NZKAITV

Similar Models

Frequently Asked Questions

What is the latest Android version for SM-R860?

The newest firmware for SM-R860 runs Android 16: build R860XXS2JZG3, released on August 25, 2026.

When did SM-R860 get its last update?

The latest build for SM-R860, R860XXS2JZG3, was released on August 25, 2026 (2 months ago).

How often does SM-R860 get updates?

Over the last 12 months SM-R860 received 20 builds, with at least one new build in 8 different months.

Is the firmware for SM-R860 official?

Yes, all firmware files for SM-R860 are 100% official, original, and obtained directly from Samsung servers.

How to flash Samsung SM-R860 using Odin?

To flash SM-R860, 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-R860?

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-R860.