You may have seen my topic on the old forum : http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1294997078 To reassume i have two "Atmega168 20pu" chips without any bootloader I have tried three methods to put the bootloader a) using arduinoisp with 16 mhz crystal b) bitbang mode c) using usbtinyISP
on all of these methods i get : avrdude: Yikes! Invalid device signature. Double check connections and try again, or use -F to override this check.
using avrdude from the command line
"C:\Program Files\Arduino\arduino-0022\hardware\tools\avr\bin\avrdude.exe" -C "C:\Program Files\Arduino\arduino-0022\hardware\tools\avr\etc\avrdude.conf" -p m168 -P com5 -c avrisp -b 19200 -F
I get : avrdude: Device signature = 0x000000 avrdude: Yikes! Invalid device signature. avrdude: Expected signature for ATMEGA168 is 1E 94 06
same are the results using winavr...