
Samsung Galaxy A51 5G
The latest firmware for Samsung Galaxy A51 5G (SM-A516N) is A516NKSS8FXE1 with Android 13, released on June 10, 2024 for 4 regions (CSC). Every official firmware build for SM-A516N, 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/A516NKSS8FXE1
SM-A516N started on Android 10 and has received 3 major Android upgrades; it now runs Android 13. The newest build, A516NKSS8FXE1, was released on June 10, 2024. No new build has appeared for 29 months, so regular updates for this model have most likely ended.
Specifications of SM-A516B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

SM-A516V

SM-A515X

SM-A5100X

SM-A526N

SM-A520X
The newest firmware for SM-A516N runs Android 13: build A516NKSS8FXE1, released on June 10, 2024.
The latest build for SM-A516N, A516NKSS8FXE1, was released on June 10, 2024 (2 years ago).
SM-A516N has had no new firmware for 29 months, so regular updates have most likely ended.
Yes, all firmware files for SM-A516N are 100% official, original, and obtained directly from Samsung servers.
To flash SM-A516N, 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-A516N.