Download Samsung Firmware SM-R840
Samsung Galaxy Watch3 45mm
The latest firmware for Samsung Galaxy Watch3 45mm (SM-R840) is R840XXU1DWK2, released on December 26, 2023 for 1 region (CSC). Every official firmware build for SM-R840, newest first: one row per build with all regions (CSC) that received it.
- Latest build
- R840XXU1DWK2
- Builds
- 10 builds
- Regions (CSC)
- 1 region
Firmware builds for SM-R840
SM-R840 update history
The newest build, R840XXU1DWK2, was released on December 26, 2023. 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
- RAM
- 1000 MB
- Flash memory
- 8 GB
- Battery capacity
- 340 mAh
- Weight
- 53.8 g
- Band material
- Leather
- Band colour
- Black
Specifications of SM-R840N, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.
Changelog for SM-R840
• 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.
• 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.
• Blood pressure/ECG
- Available in Paraguay, Georgia, Azerbaijan, and Australia
• Calendar
- Increase the calendar synchronization period from 3 months to 1 year
• Enhanced the auto walking/running icons
• Enhanced the 'Inactive time alerts' icon
• Improved device stability
Show 4 older builds
• Improved Messaging App stability
• Improved WiFi stability
• Improved system stability and reliability
The Blood Pressure app and/or ECG app in the Samsung Health Monitor is available in countries where a regulatory clearance, approval or certificate for each app has been obtained.
We expect that the number of countries where the Samsung Health Monitor to be available will continuously increase in the order of securing an appropriate regulatory clearance, approval or certificate.
Note, al...
• 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
- 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 out sleep scores, a new way to understand your sleep patterns.
1 retail code (SKU)
Box codes of SM-R840 for different colors and markets. Firmware is chosen by the model code SM-R840 and your region (CSC), not by the SKU.
- SM-R840NZKAXAR
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Frequently Asked Questions
When did SM-R840 get its last update?
The latest build for SM-R840, R840XXU1DWK2, was released on December 26, 2023 (2 years ago).
How often does SM-R840 get updates?
SM-R840 has had no new firmware for 34 months, so regular updates have most likely ended.
Is the firmware for SM-R840 official?
Yes, all firmware files for SM-R840 are 100% official, original, and obtained directly from Samsung servers.
How to flash Samsung SM-R840 using Odin?
To flash SM-R840, 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-R840?
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-R840.