I see a lot of post where folks are having a similar issue as i am, but no real solution. Basically the joystick and cortex will connect for a short while (10 to 20 seconds max). The VEXnet LED will blink red on both Cortex and Joystick. Occasionally it wil come back (only for a few seconds) but usually it requires a reboot of each system. I have tried turning off wi-fi etc but to no avail. All firmware has been updated ot he latest and batteries charged.
Any ideas? competition next weekend so really want to sort this out.