Graham Davies wrote:
Well, try using JTAG to set the clock fuses back to the internal clock. Or, do a full chip erase. If you can get into the MCU with JTAG and do an erase and your problem persists, I don't think the problem can be in the MCU and
you then need to look elsewhere.  Unless the MCU is fried.
That´s the problem. Both programmers (stk500 and avrdude) gives an error if I will write into the flash.
stk500 says: "Could not enter programming mode"
avrdude says: "stk500_2_ReceiveMessage(): timeout" and "verification error, first mismatch at byte 0x0000 0x90 != 0x08" after writing 0x90 to hfuse
(please see my logging in my first email)

I will not hope that my board is "fried".

Thomas



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