Samsung Galaxy Grand 2 (SM-G710) Firmware Overview
What is the latest SM-G710 firmware?
G710XXUAOC1, released March 13, 2015 for region PSN with Android 4.3. The archive holds 3 official builds for this region.
Is the Samsung Galaxy Grand 2 still getting updates?
Most likely not: there has been no new firmware since March 2015, so Android 4.3 is the last version this model got. The final builds below are still the best choice for a clean reinstall.
SM-G710 firmware for region PSN
How to Flash SM-G710 Firmware
Put the Samsung Galaxy Grand 2 into Download Mode, load the BL, AP, CP and CSC files into Odin on a Windows PC and press Start. Use HOME_CSC to keep your data, CSC for a full wipe.