
Samsung Galaxy Core Prime
The latest firmware for Samsung Galaxy Core Prime (SM-G3606) is G3606ZNU1AQB1 with Android 4.4.4 (KitKat), released on October 6, 2020 for 1 region (CSC). Every official firmware build for SM-G3606, newest first: one row per build with all regions (CSC) that received it.
All 8 builds in our database run Android 4.4.4 (KitKat). The newest build, G3606ZNU1AQB1, was released on October 6, 2020. No new build has appeared for 73 months, so regular updates for this model have most likely ended.
Specifications of SM-G360F, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

SM-G935TZK

SM-G930AZK

SM-G935AZS

SM-G935TZS

SM-G935AZK

SM-G935TZD

SM-G975WC

SM-G975FC
The newest firmware for SM-G3606 runs Android 4.4.4 (KitKat): build G3606ZNU1AQB1, released on October 6, 2020.
The latest build for SM-G3606, G3606ZNU1AQB1, was released on October 6, 2020 (6 years ago).
SM-G3606 has had no new firmware for 73 months, so regular updates have most likely ended.
Yes, all firmware files for SM-G3606 are 100% official, original, and obtained directly from Samsung servers.
To flash SM-G3606, 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-G3606.