Atmel Programmer


Firmware Recovery

  1. Disconnect the AVRISP from target and unplug the USB cable.
  2. Open the AVRISP by pressing on the 4 plastic clips (on the bottom) that holds the top and bottom parts of the enclosure together.
  3. Short-circuit Pin 1 and Pin 3 on the pinholes next to the USB jack: AVR-ISP
  4. Insert the USB cable. The AVRISP should now start blink red and orange
  5. Run AVR-Studio and select in the menu Tools -> AVRISP mkII Upgrade.
  6. Follow the instructions…
  7. When the upgrade is finished, unplug the AVRISP from USB and remove the short-circuit between Pin 1 and Pin 3.


Always ensure that the AVR-Dragon is powered (USB connection) when connected to a target system.

The AVR-Dragon hardware is very sensitive to improper handling. On problems, in most cases one (1) or both (1 & 2) analog switches are defective: AVR-Dragon


Firmware Recovery

  1. Power off the STK600 and remove all routing cards and targets
  2. Hold down the Program button and power on
  3. Run AVR-Studio and select in the menu Tools -> STK600 Upgrade
  4. Follow the instructions…

Switching Regulators

On a wrong handling in most cases one of the switching regulators with the marking BBO 93W Z264 or BBO 93W Z265 becomes defective. These are TI TPS62040.


If you have driver errors with Atmel EDBG programming/debugging interface under VMware (virtual machine), then try to enable the following option: VM -> Settings -> USB Controller -> Show all USB input devices