[wagonman76]

Thanks dcb. I unplugged all the mpguino circuitry and just ran the board itself. First connected to USB gets me 5.03v. Obviously I dont have a display to check but the light on the board seems to flash properly with the other parts unplugged, unlike any other time lately on USB power. Then I took it out to the car. Same thing there, 5.03v with things unplugged.

The mpguino does not power on and off with ignition. It is soldered to the courtesy circuit, which powers the radio memory and on my car has no way of switching off and is not connected through ignition or ecm or anything else. It is 12v constant power. However, maybe taking it out of the car and plugging it into USB power enough times has taken its toll on it?

If the bootloader is corrupted, how would I go about reflashing that? I did see some things on the arduino site but it is not really clear.