Hi cocooi ;
There isn't a blacklist in the latest image. The blacklist is located in /etc/modprobe.d/
I think this may be related with the drivers of the webcam you are using, did you install all the drivers needed for your camera?
Does the webcam works with UVC drivers? Have you tried with modprobe uvcvideo?
the problem is sloved!
what the happened is when i upgrade the "opkg", the uvcvideo not install good because not have space in memory,
so what need to do is to reflash edison, i use this link Intel® Edison Products — Flashing Intel® Edison (wired) - Windows*. (factory reset dont help).
tx for the help guys