In order to use the generic PIC firmware, you need an AVR firmware that is capable of working with it. Anyway, here's a zip file with the generic PIC firmware I was sent earlier this year. I will let Deepak know it's not on his website. Perhaps there's a reason for this
Use this at your own peril, cave canem, caveat emptor, etc.
Edit: removed the attachment. If you want to get the generic firmware for the NXTCam, please contact firstname.lastname@example.org
and they'll send it to you.