The download button is grey while my controller connecting to my computer

I’ve updated all my firmware and my computer is brand new!!!

Are you able to download straight to your robot? (and is the controller connected to the robot?)

but the button is still grey

Assuming you’re using Windows. Is the robot showing up in Device Manager under Ports (COM & LRT)? (You might need to click View > Show Hidden Devices to see the Ports (Com & LRT) )

Also the cable might be a problem. Try changing the cable you are using.

i’m using windows
and everything is normal but the button is broken

my teammates’ computers can work properly. we use the same robot.