A software update can include, but is not limited to
To get the best from your device, please keep your device up to date and regularly check for software updates.

Galaxy Watch Active2 (SM-R820)

Build Number : R820XXU1FWK2

Tizen version : Tizen 5.5.0.2

Release Date : 2023-12-26

• Watch faces
Supports 2 types of new Watch faces.
(Stretched Time, Perpetual)
• Stability and reliability
The stability for sensors and device behavior has been improved.

Build Number : R820XXU1FVH4

Tizen version : Tizen 5.5.0.2

Release Date : 2022-09-28

• Watch face
Enjoy new and improved watch faces with enriched style and customizable options.
- Two new Watch Faces have been added.
(Pro analog, Gradient number)
• Samsung Health
- Through the updated 'Daily Activity Indicator', Mobile Health data is synchronized to improve convenience.
- Provides a recording function when snoring is detected, using your mobile phone while you sleep.

Build Number : R820XXU1EUK2

Tizen version : Tizen 5.5.0.2

Release Date : 2021-11-15

• Watch faces
- Support the new Watchfaces
• Exercise
- Support Group Challenge Widget in watch
- Provide more accurate calorie consumption levels based on HR (Except swimming)
• Detect falls
- More falls will be detected, but other activity may also be detected as falls.
• Calendar
- Increase the calendar synchronization period from 3 months to 1 year

Build Number : R820XXU1DUH1

Tizen version : Tizen 5.5.0.2

Release Date : 2021-08-25

• Improved system stability and reliability

Build Number : R820XXU1DUE3

Tizen version : Tizen 5.5.0.2

Release Date : 2021-05-27

• Enhanced the auto walking/running icons
• Enhanced the 'Inactive time alerts' icon
• Device stability improvements, bug fixes.

Build Number : R820XXU1DUD1

Tizen version : Tizen 5.5.0.2

Release Date : 2021-04-29

• Improved Messaging App stability
• Improved WiFi stability
• Improved system stability and reliability

Build Number : R820XXU1DUA3

Tizen version : Tizen 5.5.0.2

Release Date : 2021-01-15

• Enhanced Samsung Health Function
- Now you can have a 1 : N—as opposed to a 1 : 1—group challenge and Live feed when you’re walking with friends.
- Additional sleep scores and information are provided when you’re wearing the watch as you fall asleep.
- Auto workout recognition time has been reduced (on three athletics: running, rowing machine and elliptical).
- Performance of certain health sensor measurements has been enhanced.
- Enjoy home workouts with a variety of fitness programs.
• SmartThings Find
- If you’ve lost your watch, you can see its location on the map.
• Hand Wash
- With the download app, automatic hand washing recognition ensures you keep your hands clean and develop good hand washing habits.
• Improved system stability and reliability

Build Number : R820XXU1CTJ5

Tizen version : Tizen 5.5.0.1

Release Date : 2020-10-28

• If exercising with a watch, the voice guide is provided via a headset connected to the mobile device.
• Add a voice guidance about cumulative data and heart rate to the Auto Lap of Running/Cycling.
• UX update (A second hand will not be shown on AOD screen.)
• Improved system stability and reliability

Build Number : R820XXU1CTI4

Tizen version : Tizen 5.5.0.1

Release Date : 2020-09-29

• Improved GPS accuracy and connection
• Improved system stability and reliability

Build Number : R820XXU1CTH8

Tizen version : Tizen 5.5.0.1

Release Date : 2020-09-23

- Advanced Running Analysis : Give the insights you need to become a better runner.
- VO2max : Inform your cardiorespiratory endurance.
- Detect falls : Watch can send out SOS call and messages to emergency contact when a hard fall is detected.
- Enhanced Notification : Upon receiving a message notification, a chat window appears and can also view images.
- AR Emoji/Bitmoji : Send AR Emoji and Bitmoji through the watch.
- Capture : Supports scroll capture feature that automatically sends the screen-capture image to the phone.

Build Number : R820XXU1BTG1

Tizen version : Tizen 4.0.0.8

Release Date : 2020-08-04

• Improved system stability and reliability

Build Number : R820XXU1BTF3

Tizen version : Tizen 4.0.0.8

Release Date : 2020-07-14

• Improved system stability and reliability

Build Number : R820XXU1BTD3

Tizen version : Tizen 4.0.0.7

Release Date : 2020-04-14

• Improved system stability and reliability

Build Number : R820XXU1BTA1

Tizen version : Tizen 4.0.0.7

Release Date : 2020-01-09

• Improved system reliability

Build Number : R820XXU1BSK4

Tizen version : Tizen 4.0.0.7

Release Date : 2019-11-22

• Bug fix for random disabling of Always On Mode.
• Improved accuracy of calorie measurement based on heart rate sensor.
• Improved stability for Bixby features.

Build Number : R820XXU1BSJ6

Tizen version : Tizen 4.0.0.7

Release Date : 2019-10-18

· Fixed screen flickering bug when screen returning to Watch Always On mode.
· Improved language support for Watch's Samsung Health features.

Build Number : R820XXU1BSI9

Tizen version : Tizen 4.0.0.7

Release Date : 2019-09-27

· Bug fix for GPS.
· Touch bezel setting turned on by default.
· Improved performance of GPS.

Build Number : R820XXU1ASHF

Tizen version : Tizen 4.0.0.6

Release Date : 2019-09-06

· Improved system reliability