Прошивки на Canon:
http://web.canon.jp/Imaging/BeBit-e.html

Прошивки (как понимаю патченые):
- Hacked Canon EOS 300D Digital Rebel to 10D Firmware
- Firmware to upgrade your Panasonic Lumix DMC-FZ1 to a FZ2
http://www.i-hacked.com/component/op...c,select/id,4/

И еще куча прошивок:
http://www.dpreview.com/news/search....s=on&detail=on