Galaxy Watch Ultra

Samsung Galaxy Watch Ultra SM-L705U firmware

The latest firmware for Samsung Galaxy Watch Ultra (SM-L705U) is L705USQS3BZF4 with Android 16, released on July 13, 2026 for 1 region (CSC). Every official firmware build for SM-L705U, newest first: one row per build with all regions (CSC) that received it.

Latest build
L705USQS3BZF4 Android 16 · 4 months ago
Builds
12 builds
Regions (CSC)
1 region

Firmware builds for SM-L705U

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/L705USQS3BZF4

SM-L705U update history

SM-L705U started on Android 14 and has received 1 major Android upgrade; it now runs Android 16. The newest build, L705USQS3BZF4, was released on July 13, 2026 with the July 2026 security patch. That patch (SMR Jul-2026) fixes 53 vulnerabilities, 6 of them critical. Over the last 12 months SM-L705U received 4 builds, spread over 4 different months.

Device specifications

Launched with
Wear OS
Display diagonal
3.81 cm (1.5")
Display technology
AMOLED
Display resolution
480 x 480 pixels
RAM
2000 MB
Flash memory
64 GB
Battery capacity
590 mAh
Weight
60.5 g
Band material
Titanium
Band colour
Blue
Band size
One Size

Specifications of SM-L705F, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

Changelog for SM-L705U

• 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.
• 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.

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• Security
The device is protected with improved security.

Show 4 older builds

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

• Stability and reliability
The stability has been improved.

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

• Stability and reliability
- Battery charging stability has been improved.
- Battery stability has been improved.
- Overall device stability has been improved.

New firmware for other devices

All latest builds

Similar Models

Frequently Asked Questions

What is the latest Android version for SM-L705U?

The newest firmware for SM-L705U runs Android 16: build L705USQS3BZF4, released on July 13, 2026.

When did SM-L705U get its last update?

The latest build for SM-L705U, L705USQS3BZF4, was released on July 13, 2026 (4 months ago).

How often does SM-L705U get updates?

Over the last 12 months SM-L705U received 4 builds, with at least one new build in 4 different months.

Is the firmware for SM-L705U official?

Yes, all firmware files for SM-L705U are 100% official, original, and obtained directly from Samsung servers.

How to flash Samsung SM-L705U using Odin?

To flash SM-L705U, 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-L705U?

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-L705U.

Is this the stock ROM or flash file for SM-L705U?

Yes. Every build on this page is the official stock ROM for SM-L705U from Samsung's update server, the same package other sites call the flash file or the software update. It installs with Odin on a Windows PC.

Does flashing firmware remove the FRP lock on SM-L705U?

No. Factory Reset Protection is tied to the Google account that was on the phone and survives a firmware flash. Sign in with that account or use the legal options in our FRP guide.