
Samsung Galaxy Note5
The latest firmware for Samsung Galaxy Note5 (SM-N920V) is N920VVRS3CRH1 with Android 7.0 (Nougat), released on July 30, 2018 for 1 region (CSC). Every official firmware build for SM-N920V, 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/N920VVRS3CRH1
SM-N920V started on Android 5 and has received 2 major Android upgrades; it now runs Android 7.0 (Nougat). The newest build, N920VVRS3CRH1, was released on July 30, 2018. No new build has appeared for 100 months, so regular updates for this model have most likely ended.
Box codes of SM-N920V for different colors and markets. Firmware is chosen by the model code SM-N920V and your region (CSC), not by the SKU.

SM-N920AZW

SM-N920VZW

SM-N950UZK

SM-N920AZK

SM-N950X

SM-N930V

SM-N9300

SM-N930S
The newest firmware for SM-N920V runs Android 7.0 (Nougat): build N920VVRS3CRH1, released on July 30, 2018.
The latest build for SM-N920V, N920VVRS3CRH1, was released on July 30, 2018 (8 years ago).
SM-N920V has had no new firmware for 100 months, so regular updates have most likely ended.
Yes, all firmware files for SM-N920V are 100% official, original, and obtained directly from Samsung servers.
To flash SM-N920V, 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-N920V.