
Samsung Galaxy S7
The latest firmware for Samsung Galaxy S7 (SM-G930AZ) is G930AZTUS9CSB1 with Android 8.0.0 (Oreo), released on February 6, 2019 for 1 region (CSC). Every official firmware build for SM-G930AZ, 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/G930AZTUS9CSB1
All 3 builds in our database run Android 8.0.0 (Oreo). The newest build, G930AZTUS9CSB1, was released on February 6, 2019. No new build has appeared for 94 months, so regular updates for this model have most likely ended.
Specifications of SM-G930F, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

SM-G930AZK

SM-G935TZK

SM-G928A

SM-G925A

SM-G920X
The newest firmware for SM-G930AZ runs Android 8.0.0 (Oreo): build G930AZTUS9CSB1, released on February 6, 2019.
The latest build for SM-G930AZ, G930AZTUS9CSB1, was released on February 6, 2019 (7 years ago).
SM-G930AZ has had no new firmware for 94 months, so regular updates have most likely ended.
Yes, all firmware files for SM-G930AZ are 100% official, original, and obtained directly from Samsung servers.
To flash SM-G930AZ, 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-G930AZ.