
Samsung Galaxy Note7
Every official firmware build for SM-N930S, 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/N930SKSU2BQC1
Specifications of SM-N930A, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

SM-N920AZW

SM-N920VZW

SM-N950UZK

SM-N920AZK

SM-N950X

SM-N930V

SM-N9300

SM-N930L
You can find the firmware on the model: SM-N930S page.
Yes, all firmware files for SM-N930S are 100% official, original, and obtained directly from Samsung servers.
To flash SM-N930S, 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-N930S.