How does filter updation take place in CNN.

Question

I want to know weight upgradation done in CNN.

Answer 1

https://www.quora.com/Where-can-I-find-a-detailed-description-of-weights-update-in-convolutional-neural-networks

http://deeplearning.net/tutorial/lenet.html

edit:
It seems the way weights are updated in normal NN is different than Convolutional Neural Network