VEX V5 Firmware
Many VEX V5 products contain their own internal processors and run on a special Operating System known as "VEXos". This Operating System is written entirely by VEX Robotics, and harnesses the flexibility and power of VEX hardware for the diverse needs of education and the rigors of competition.
VEXos allows for advanced programming features and an enhanced user experience. The best way to ensure that your V5 system is functioning properly is to keep the firmware up to date. This is done simply by opening VEXcode, then plugging your V5 Robot Brain into your computer and following the prompts. The Brain will then automatically push out the latest updates to any V5 device that is connected to it.
A standalone VEXos updater is also available for both Windows and Mac.
A changelog for Cortex firmware can be found here.