
Samsung J1 Mini Prime
The latest firmware for Samsung J1 Mini Prime (SM-J106F) is J106FJVU0ARL1 with Android 6.0.1 (Marshmallow), released on December 6, 2018 for 15 regions (CSC). Every official firmware build for SM-J106F, 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/J106FJVU0ARL1
All 19 builds in our database run Android 6.0.1 (Marshmallow). The newest build, J106FJVU0ARL1, was released on December 6, 2018. No new build has appeared for 96 months, so regular updates for this model have most likely ended.
Box codes of SM-J106F for different colors and markets. Firmware is chosen by the model code SM-J106F and your region (CSC), not by the SKU.

SM-J106M

SM-J100VPP

SM-J105Y

SM-J200GU

SM-J110M
The newest firmware for SM-J106F runs Android 6.0.1 (Marshmallow): build J106FJVU0ARL1, released on December 6, 2018.
The latest build for SM-J106F, J106FJVU0ARL1, was released on December 6, 2018 (7 years ago).
SM-J106F has had no new firmware for 96 months, so regular updates have most likely ended.
Yes, all firmware files for SM-J106F are 100% official, original, and obtained directly from Samsung servers.
To flash SM-J106F, 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-J106F.