Controller and brain cannot connect

I have one of the brains that keeps searching for its controller, but they cannot connect. I have checked for software downloads and everything is up to date. I have removed the blue radios and put them back in. They were able to connect earlier in the school year, but not now.

Jctchr,

Thank you for visiting our forum.
The first thing that I would like to check is your firmware. Please attach a screenshot of your VEXos Firmware Updater as everything is connected to the brain.
Example attached.

If you do not have VEXos installed in your PC, here is a video that walks you through the installation process: https://www.youtube.com/watch?v=4Ti89ErD3VI&index=15&list=PLvvcc7S26YEgp60fNJwh64aj9ywiZ79Ta

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