
Samsung Galaxy J3(2016)
The latest firmware for Samsung Galaxy J3(2016) (SM-J320FN) is J320FNXXU0ASH1 with Android 5.1.1 (Lollipop), released on October 9, 2019 for 12 regions (CSC). Every official firmware build for SM-J320FN, 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/J320FNXXU0ASH1
All 47 builds in our database run Android 5.1.1 (Lollipop). The newest build, J320FNXXU0ASH1, was released on October 9, 2019. No new build has appeared for 85 months, so regular updates for this model have most likely ended.
Specifications of SM-J320F, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.

SM-J320VPP

SM-J327VPP

SM-J326AZ

SM-J337A

SM-J330N
The newest firmware for SM-J320FN runs Android 5.1.1 (Lollipop): build J320FNXXU0ASH1, released on October 9, 2019.
The latest build for SM-J320FN, J320FNXXU0ASH1, was released on October 9, 2019 (7 years ago).
SM-J320FN has had no new firmware for 85 months, so regular updates have most likely ended.
Yes, all firmware files for SM-J320FN are 100% official, original, and obtained directly from Samsung servers.
To flash SM-J320FN, 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-J320FN.