
Samsung Galaxy Note Edge
The latest firmware for Samsung Galaxy Note Edge (SM-N915FY) is N915FYXXU1DSG2 with Android 6.0.1 (Marshmallow), released on July 24, 2019 for 11 regions (CSC). Every official firmware build for SM-N915FY, newest first: one row per build with all regions (CSC) that received it.
SM-N915FY started on Android 4 and has received 2 major Android upgrades; it now runs Android 6.0.1 (Marshmallow). The newest build, N915FYXXU1DSG2, was released on July 24, 2019. No new build has appeared for 88 months, so regular updates for this model have most likely ended.
Box codes of SM-N915FY for different colors and markets. Firmware is chosen by the model code SM-N915FY 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-N915FY runs Android 6.0.1 (Marshmallow): build N915FYXXU1DSG2, released on July 24, 2019.
The latest build for SM-N915FY, N915FYXXU1DSG2, was released on July 24, 2019 (7 years ago).
SM-N915FY has had no new firmware for 88 months, so regular updates have most likely ended.
Yes, all firmware files for SM-N915FY are 100% official, original, and obtained directly from Samsung servers.
To flash SM-N915FY, 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-N915FY.