
Samsung Galaxy A10
The latest firmware for Samsung Galaxy A10 (SM-A105N) is A105NKOS5CWA2 with Android 11, released on February 16, 2023 for 1 region (CSC). Every official firmware build for SM-A105N, 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/A105NKOS5CWA2
SM-A105N started on Android 9 and has received 2 major Android upgrades; it now runs Android 11. The newest build, A105NKOS5CWA2, was released on February 16, 2023. No new build has appeared for 44 months, so regular updates for this model have most likely ended.
Specifications of SM-A105, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

SM-A105M

SM-A107M

SM-A102W

SM-A115A

SM-A207M
The newest firmware for SM-A105N runs Android 11: build A105NKOS5CWA2, released on February 16, 2023.
The latest build for SM-A105N, A105NKOS5CWA2, was released on February 16, 2023 (3 years ago).
SM-A105N has had no new firmware for 44 months, so regular updates have most likely ended.
Yes, all firmware files for SM-A105N are 100% official, original, and obtained directly from Samsung servers.
To flash SM-A105N, 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-A105N.