Samsung Galaxy S4 Mini (GT-I9190) Firmware Overview
What is the latest GT-I9190 firmware?
I9190UBSCQB1, released March 16, 2017 for region JDI with Android 4.4.2. The archive holds 2 official builds for this region.
Is the Samsung Galaxy S4 Mini still getting updates?
Most likely not: there has been no new firmware since March 2017, so Android 4.4.2 is the last version this model got. The final builds below are still the best choice for a clean reinstall.
GT-I9190 firmware for region JDI
How to Flash GT-I9190 Firmware
Put the Samsung Galaxy S4 Mini 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.