Samsung Galaxy Watch7
The latest firmware for Samsung Galaxy Watch7 (SM-L315N) is L315NKOS3BZF4 with Android 16, released on July 8, 2026 for 1 region (CSC). Every official firmware build for SM-L315N, 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/L315NKOS3BZF4
SM-L315N started on Android 14 and has received 1 major Android upgrade; it now runs Android 16. The newest build, L315NKOS3BZF4, was released on July 8, 2026. Updates have become rare: SM-L315N received 3 builds over the last 12 months, in 3 different months.
Specifications of SM-L315F, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

SM-L315U

SM-L320

SM-L330

SM-L340

SM-L505F
The newest firmware for SM-L315N runs Android 16: build L315NKOS3BZF4, released on July 8, 2026.
The latest build for SM-L315N, L315NKOS3BZF4, was released on July 8, 2026 (3 months ago).
Over the last 12 months SM-L315N received 3 builds, with at least one new build in 3 different months.
Yes, all firmware files for SM-L315N are 100% official, original, and obtained directly from Samsung servers.
To flash SM-L315N, 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-L315N.