I am trying to upload a new bootloader to a pro mini using an arduino as an ISP. I have also been trying to upload using my MKII programmer. Through arduino I get "Invalid device signature" and through AVR studio I get a general error saying to check power, etc. I have tried multiple (3) pro minis, one with a stock chip (I can program it over USB), and two with new chips (the point of the whole mess).
I have seen tutorials and everything, I have programmed blank chips in the pass, just never through the pro mini. I know my connections are right. Is there anything I should be doing circuit wise? Maybe some needed capacitance somewhere?
According to my logic analyzer, MISO is completely inactive. I think I read somewhere that reset needs to be held low however. and this isn't the case. The reset pin jumps around a bit then just settles to HIGH. (This is with arduino ISP, haven't analyzed MKII)
Any help would be appreciated.
EDIT:
Just analyzed MISO,MOSI,SCK, and reset after clicking the read device signature button in AVR studio. RESET was being pulled low, clock looked good, MOSI was fully active, and MISO was fully active. So it looks likes the Atmega is talking? So confused. The transmission takes place for 300ms.