Samsung Galaxy S 4 (Snapdragon) (GT-I9505) Firmware Overview
What is the latest GT-I9505 firmware?
I9505XXUHQK1, released January 11, 2018 for region TMH with Android 5.0.1. The archive holds 2 official builds for this region.
Is the Samsung Galaxy S 4 (Snapdragon) still getting updates?
Most likely not: there has been no new firmware since January 2018, so Android 5.0.1 is the last version this model got. The final builds below are still the best choice for a clean reinstall.
GT-I9505 firmware for region TMH
How to Flash GT-I9505 Firmware
Put the Samsung Galaxy S 4 (Snapdragon) 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.