New firmware now no comunication

The controler and cortex worked with the vexnet keys prior to downloading the new firmware 3.54 Now robot only will run autonomus download. Have tried resyncing cortex and controller, powering off. Nothing seems to Work. HELP!

Actually called tech support and got help for the problem. Restored back to an earlier version 3.2 and had to use a RobotC default program file to restore factory pre-sets, it fixed the issue. :rolleyes: