
Samsung Galaxy Note3 Neo
Every official firmware build for SM-N7507, newest first: one row per build with all regions (CSC) that received it.
Specifications of SM-N7505, 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-N930S
You can find the firmware on the model: SM-N7507 page.
Yes, all firmware files for SM-N7507 are 100% official, original, and obtained directly from Samsung servers.
To flash SM-N7507, 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-N7507.