Chef, what year is your corolla, trim and do you have Navi?
- do use your USB connector for media, usb thumb drives or phone charging?
- what version of firmware on the system do you have ( probably can't tell if you're unable to access radio, mine's : AU.70.64 for GUI, Nav, Bluetooth and everything else. I remember updating the system twice since I got it new. Mine's a 2015 premium with navigation.
I would hold off on replacing a radio. This sounds like a software not hardware issue.
Please describe your entune habits, did you install any new applications on it?
What's the climate like where you live, did it just get warm or really cold?
How many miles on your corolla?
Please answer those questions as this is becoming alarming if more people are starting to experience this.