Cortex won't connect to computer

VEX V5 General Discussion General Forum
#1

I can’t get my cortex to connect to my computer. We had it connected then it unconnected and won’t connect. I tried to use an A to A cable. I also tried different communication modes. It won’t let me update the firmware. Do you have any suggestions?

Thanks

#2

  1. Try holding down the “config” button left of the battery connector while cycling the cortex before updating (the cortex should blink differently that normal)

  2. Try a different USB port on your computer

  3. Try a different USB A-A

  4. Look at the troubleshooting guide here https://content.vexrobotics.com/docs/VEX_Robot_Troubleshooting_Flowchart_0811.pdf

  5. Contact VEX support

#3

Have you tried it?

#4

Also make sure the appropriate drivers are installed on your PC, they can be found here http://www.vexrobotics.com/vexedr/software/firmware/

#5

manually update the firmware.

#6

You could also connect through a programmer cable and the controller, as shown here:
http://pros.cs.purdue.edu/img/wiring-diagram.png

#7

If your running a linux machine I believe there is a bug regarding upload to the cortex using A to A. Instead you need use a programming hardware kit, like in the post by @hotel

#8

From time to time I’ve even found the programming kit to work better than direct A-to-A on Windows too :slight_smile:

#9