
Samsung Galaxy Grand2
The latest firmware for Samsung Galaxy Grand2 (SM-G7105) is G7105XXUBQG2 with Android 4.4.2 (KitKat), released on July 13, 2017 for 2 regions (CSC). Every official firmware build for SM-G7105, 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/G7105XXUBQG2
All 40 builds in our database run Android 4.4.2 (KitKat). The newest build, G7105XXUBQG2, was released on July 13, 2017. No new build has appeared for 113 months, so regular updates for this model have most likely ended.
Box codes of SM-G7105 for different colors and markets. Firmware is chosen by the model code SM-G7105 and your region (CSC), not by the SKU.

SM-G710S

SM-G715A

SM-G720N0

SM-G611S

SM-G610S
The newest firmware for SM-G7105 runs Android 4.4.2 (KitKat): build G7105XXUBQG2, released on July 13, 2017.
The latest build for SM-G7105, G7105XXUBQG2, was released on July 13, 2017 (9 years ago).
SM-G7105 has had no new firmware for 113 months, so regular updates have most likely ended.
Yes, all firmware files for SM-G7105 are 100% official, original, and obtained directly from Samsung servers.
To flash SM-G7105, 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-G7105.