Samsung Galaxy Core (GT-I8260) Firmware Overview
What is the latest GT-I8260 firmware?
I8260XXAOD3, released May 20, 2015 for region SEB with Android 4.1–4.3. The archive holds 2 official builds for this region.
Is the Samsung Galaxy Core still getting updates?
Most likely not: there has been no new firmware since May 2015, so Android 4.1–4.3 is the last version this model got. The final builds below are still the best choice for a clean reinstall.
GT-I8260 firmware for region SEB
How to Flash GT-I8260 Firmware
Put the Samsung Galaxy Core 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.