Samsung Galaxy S4 Mini Duos (GT-I9192) Firmware Overview
What is the latest GT-I9192 firmware?
I9192UBSCQB1, released February 17, 2017 for region BVO with Android 4.4.2. The archive holds 2 official builds for this region.
Is the Samsung Galaxy S4 Mini Duos still getting updates?
Most likely not: there has been no new firmware since February 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-I9192 firmware for region BVO
How to Flash GT-I9192 Firmware
Put the Samsung Galaxy S4 Mini Duos 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.