Smartphone Integration: Gain native support for Apple CarPlay and Android Auto.
"File Not Supported": Ensure the file is named exactly upgrade.lgu and the drive is FAT32.
Update Button Greyed Out: This usually means the system already has 1.0.13.1 installed or a newer version (like 1.0.15.x). Check your current version in Settings > System > System Version.
Stability: Version 1.0.13.1 is widely considered the most stable "final" build for this hardware generation.
Upgrading to 1.0.13.1 turns a dated infotainment system into a modern hub. By moving to the newer hardware required for this firmware, you eliminate the lag and limited connectivity of the 9.1.3 era. It is the single best value-for-money modification for Duster, Sandero, and Logan owners looking to modernize their ride.