Re: OT AVR Flash

linnix wrote: 

Yes, there is an external 32KHz crystal.
Programmings are successful, but verifications are
wrong in one case and mismatch in another.


That is somewhat flawed thinking: If verify fails, then
programming was NOT succesful.

Some software does not verify _during_ pgm,
and so does not know until verify, that there
was any problems.

If there is a separate chip erase command on your SW,
try that, and then verify you have a blank device.
-jg

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