Samsung Galaxy Watch Active2
The latest firmware for Samsung Galaxy Watch Active2 (SM-R825U) is R825USQU1EWK2, released on January 3, 2024 for 3 regions (CSC). Every official firmware build for SM-R825U, newest first: one row per build with all regions (CSC) that received it.
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/R825USQU1EWK2
The newest build, R825USQU1EWK2, was released on January 3, 2024. No new build has appeared for 34 months, so regular updates for this model have most likely ended.
Specifications of SM-R825US, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.
• 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.
• Calendar
- Increase the calendar synchronization period from 3 months to 1 year
• Improved Samsung Health Function
- You can now enjoy a group-walking challenge with your friends
- Additional sleep score insight provided
- 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 syste...
• Improved GPS accuracy and connection
• 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 system stability and reliability
• 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.
• Added the new Samsung Health Monitor App for ECG Measurements.
(※ Available on Galaxy smartphones with Android 7.0 and later.)
• 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 c...
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Bug fix for GPS.
· Touch bezel setting turned on by default.
· Improved performance of GPS.
Box codes of SM-R825U for different colors and markets. Firmware is chosen by the model code SM-R825U and your region (CSC), not by the SKU.

SM-R825FS

SM-R835FS

SM-R815W

SM-R720

SM-R920
The latest build for SM-R825U, R825USQU1EWK2, was released on January 3, 2024 (2 years ago).
SM-R825U has had no new firmware for 34 months, so regular updates have most likely ended.
Yes, all firmware files for SM-R825U are 100% official, original, and obtained directly from Samsung servers.
To flash SM-R825U, 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.
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-R825U.