And, if you do not have a crystal on hand, you can use Nick's bootloader with 8MHz signal on pin 9:
If you like working with the Arduino IDE, this one has an 8MHz signal too:
And, if you do not have a crystal on hand, you can use Nick's bootloader with 8MHz signal on pin 9:
If you like working with the Arduino IDE, this one has an 8MHz signal too: