
Samsung Galaxy On7
The latest firmware for Samsung Galaxy On7 (SM-G600F) is G600FXXU1APL3 with Android 6.0.1 (Marshmallow), released on December 31, 2016 for 1 region (CSC). Every official firmware build for SM-G600F, 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/G600FXXU1APL3
All 6 builds in our database run Android 6.0.1 (Marshmallow). The newest build, G600FXXU1APL3, was released on December 31, 2016. No new build has appeared for 119 months, so regular updates for this model have most likely ended.
Box codes of SM-G600F for different colors and markets. Firmware is chosen by the model code SM-G600F and your region (CSC), not by the SKU.

SM-G600S

SM-G611S

SM-G610S

SM-G615FU

SM-G6200
The newest firmware for SM-G600F runs Android 6.0.1 (Marshmallow): build G600FXXU1APL3, released on December 31, 2016.
The latest build for SM-G600F, G600FXXU1APL3, was released on December 31, 2016 (9 years ago).
SM-G600F has had no new firmware for 119 months, so regular updates have most likely ended.
Yes, all firmware files for SM-G600F are 100% official, original, and obtained directly from Samsung servers.
To flash SM-G600F, 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-G600F.