AVR-Chat

Hi Bruce,

in case you have (however) accidently tampered the internal program of your STK500 you may restore that as follows:

Disconnect any cables from the two ISP connectors

Do not insert any device into the programming sockets

Press the programming button just besides the ISP-connector and keep it pressed

turn on the Power for the STK500

Release the programming button

The STK500 should go into upgrade-mode

Now start AVR-Studio

(the next steps a have to recover from my memory)

Select "Tools" -> "AVRPROG". A device of type 8515 (or 8535 I´m not 100% sure) should be "selected" in the box (you can´t change it anyhow)

Select the file stk500.ebn in the following directory: C:\Program Files\Atmel\AVR Tools\STK500 as upgrade file

and hit the upgrade/program button.

That will write the latest (at least latest according to the version of AVR-Studio you are using) STK500 firmware version to your STK.

I just had a similar problem last week and for me that and nothing else was the solution. No idea how I broke the STK.

I can´t find the proper document, but I´m sure the above procedure is described much better somewhere in the docs.

In general HV-programming should work!

One last idea: your power supply is working properly?!? Not too high, not to low in voltage?

Good luck!

Kind regards,

Klaus
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