Samsung Galaxy S25 FE
The latest firmware for Samsung Galaxy S25 FE (SM-S731N) is S731NKSSACZJ2 with Android 17, released on October 6, 2026 for 4 regions (CSC). Every official firmware build for SM-S731N, 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/S731NKSSACZJ2
SM-S731N started on Android 16 and has received 1 major Android upgrade; it now runs Android 17. The upgrade to Android 17 started rolling out on September 19, 2026. The newest build, S731NKSSACZJ2, was released on October 6, 2026. Over the last 12 months SM-S731N received 11 builds, with a new build in 9 of those months, in line with Samsung's monthly security updates. Samsung guarantees security updates for this model until September 25, 2032.
Specifications of SM-S731B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

SM-S741W

SM-S741B

SM-S947W

SM-S942W

SM-S942U

SM-S947U

SM-S948U

SM-S948W
The newest firmware for SM-S731N runs Android 17: build S731NKSSACZJ2, released on October 6, 2026.
The latest build for SM-S731N, S731NKSSACZJ2, was released on October 6, 2026 (19 days ago).
Over the last 12 months SM-S731N received 11 builds, with at least one new build in 9 different months.
Yes, all firmware files for SM-S731N are 100% official, original, and obtained directly from Samsung servers.
To flash SM-S731N, 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-S731N.