avrdude: Yikes! Invalid device signature

Hi all,

I'm trying to program an ATtiny4313 chip on a custom board with an Arduino UNO. Every time I go to program the chip/board with the UNO I get this message:

avrdude: Yikes! Invalid device signature.
Double check connections and try again, or use -F to override this check.

I've checked the wiring and it appears ok. I know absolutely nothing about programming. I just want this simple light pattern to work!!!

PLEASE help!!

Rich

You must set the board type correctly to a definition specific for the ATtiny4313

Thanks so much for responding. I tried reinstalling the software and now the error message has changed?

avrdude: Expected signature for ATtiny4313 is 1E 92 0D
Double check chip, or use -F to override this check.
Wrong microcontroller found. Did you select the right board from the Tools > Board menu?

I've definitely selected the right board? How do I set the board type to a definition specific for the ATtiny4313?

Rich