Samsung Watch Ultra2
The latest firmware for Samsung Watch Ultra2 (SM-L7150) is L7150ZCS1AZH4 with Android 17, released on August 31, 2026 for 1 region (CSC). Every official firmware build for SM-L7150, 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/L7150ZCS1AZH4
All 2 builds in our database run Android 17. The newest build, L7150ZCS1AZH4, was released on August 31, 2026 with the August 2026 security patch. That patch (SMR Aug-2026) fixes 54 vulnerabilities, 8 of them critical. Updates have become rare: SM-L7150 received 2 builds over the last 12 months, in 2 different months.
Specifications of SM-L715F, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.
• Security
The device is protected with improved security.
These changes may vary depending on the model, country, or network operator of the customer environment.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.

SM-L715F

SM-L705U

SM-L505F

SM-L310N

SM-L320
The newest firmware for SM-L7150 runs Android 17: build L7150ZCS1AZH4, released on August 31, 2026.
The latest build for SM-L7150, L7150ZCS1AZH4, was released on August 31, 2026 (1 month ago).
Over the last 12 months SM-L7150 received 2 builds, with at least one new build in 2 different months.
Yes, all firmware files for SM-L7150 are 100% official, original, and obtained directly from Samsung servers.
To flash SM-L7150, 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-L7150.