
Samsung Galaxy A12
The latest firmware for Samsung Galaxy A12 (SM-A125N) is A125NKSS4CXK2 with Android 12, released on November 28, 2024 for 4 regions (CSC). Every official firmware build for SM-A125N, 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/A125NKSS4CXK2
SM-A125N started on Android 11 and has received 1 major Android upgrade; it now runs Android 12. The newest build, A125NKSS4CXK2, was released on November 28, 2024. No new build has appeared for 23 months, so regular updates for this model have most likely ended.
Specifications of SM-A125F, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

SM-A125U1

SM-A025A

SM-A115A

SM-A136S

SM-A135N
The newest firmware for SM-A125N runs Android 12: build A125NKSS4CXK2, released on November 28, 2024.
The latest build for SM-A125N, A125NKSS4CXK2, was released on November 28, 2024 (1 year ago).
SM-A125N has had no new firmware for 23 months, so regular updates have most likely ended.
Yes, all firmware files for SM-A125N are 100% official, original, and obtained directly from Samsung servers.
To flash SM-A125N, 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-A125N.