You cannot jump directly from 9.13 to 10.131 with a single file in many cases — intermediate updates may be required unless you have a special “direct upgrade” package (rare for official dealer tools).
Upgrading a Medianav unit is not like updating a phone. If you interrupt the power, you will (permanently destroy) the unit. Read this twice. upgrade medianav 913 to 10131
Many drivers tried to bridge the gap. They downloaded the firmware, hoping a simple USB stick would transform their 9.1.3 unit into a smartphone-syncing powerhouse. But there was a dragon at the gate: Hardware Incompatibility . You cannot jump directly from 9
It doesn't turn your Medianav into an iPad, but it makes it feel intentional rather than broken. upgrade medianav 913 to 10131