Self-Check fail Error

Well, if I understand you correctly, you were saying that doing the following would reset your Radio back to factory:

  1. Remove the battery
  2. Press and hold the Home key
  3. Insert the battery
  4. While still holding the Home key, press the power button on the Radio.

I tried this, and it did not reset anything.

HOWEVER,

If you hold the top 2 buttons down, while powering on the DTR, it goes to a flashing menu that looks like this:

IMG_5012
IMG_5011

Not sure what to do with that screen, but maybe it lets you re-flash it?