Thank you for your help…
I went through the DFU process with no SD card installed as you suggested. After the DFU firmware update, I disconnected the USB cable, removed the jumper, and reconnected the camera. All the LEDs are still flashing indicating a fault condition.
After this, I tried reloading the firmware (without DFU), and the IDE just hangs at “Connecting” forever. If I click cancel, I get a message that says “Unable to connect to your cams normal bootloader.” If I click OK it just offers to DFU again. All LEDs still blinking.
The ERROR.LOG file contains the following:
FATAL ERROR:
Failed to init sensor, error:-2