Galaxy Watch3 45mm

Download Samsung Firmware SM-R845U

Samsung Galaxy Watch3 45mm

The latest firmware for Samsung Galaxy Watch3 45mm (SM-R845U) is R845USQU1DWK2, released on January 3, 2024 for 1 region (CSC). Every official firmware build for SM-R845U, newest first: one row per build with all regions (CSC) that received it.

Latest build
R845USQU1DWK2
Builds
9 builds
Regions (CSC)
1 region

Firmware builds for SM-R845U

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/R845USQU1DWK2

SM-R845U update history

The newest build, R845USQU1DWK2, was released on January 3, 2024. No new build has appeared for 34 months, so regular updates for this model have most likely ended.

Device specifications

Launched with
Tizen
Display diagonal
3.56 cm (1.4")
Display technology
OLED
Display resolution
360 x 360 pixels
Processor frequency
1.15 MHz
RAM
1000 MB
Battery capacity
340 mAh
Weight
53.8 g
Band colour
Black

Changelog for SM-R845U

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

• 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.

• GPS
The stability has been improved.

• 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

• Improved WiFi stability
Show 4 older builds

• Improved Samsung Health Function
- You can now enjoy a group-walking challenge with your friends
- Reduced auto workout recognition time (running, rowing machine, elliptical)
- Enjoy home workout with a variety of fitness programs
• SmartThings Find
- You can find the location of the watch on the map.
• Hand Wash
- After downloading the Hand Wash app, your watch can automatically detect and time, when you start washing your hands
• Improved system stability and reliability

• Voice guidance provided via headset connected to mobile when exercising with a watch.
• Voice guidance provided for traveled distance and HR data, when Auto Lap feature is enabled during Running/Cycling.
• Improved Blood Oxygen measurement
• Improved system stability and reliability

• Added the new Samsung Health Monitor App for ECG measurements.
※ Available on Galaxy smartphones with Android 7.0 and later

※ After updating the Samsung Health App and check the new features below.
- Blood Oxygen : Check how effectively your respiratory system transfers oxygen to the blood stream.
  * Not Available Countries : Algeria, Angola, Canada, France, Iran, Japan, Libya, South Africa, Thailand
- Advanced Running Analysis : Giving you the insights you need to improve your running form.
- VO2max : Check the maximum amount of oxygen you utilize during exercise to improve your endurance
- Sleep score : Check ou...

1 retail code (SKU)

Box codes of SM-R845U for different colors and markets. Firmware is chosen by the model code SM-R845U and your region (CSC), not by the SKU.

  • SM-R845UZKAXAR

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Frequently Asked Questions

When did SM-R845U get its last update?

The latest build for SM-R845U, R845USQU1DWK2, was released on January 3, 2024 (2 years ago).

How often does SM-R845U get updates?

SM-R845U has had no new firmware for 34 months, so regular updates have most likely ended.

Is the firmware for SM-R845U official?

Yes, all firmware files for SM-R845U are 100% official, original, and obtained directly from Samsung servers.

How to flash Samsung SM-R845U using Odin?

To flash SM-R845U, 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-R845U?

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-R845U.