Mini pcie wifi : modifying card's ID

hello,

I am looking for such a card to replace my blob non free card in my thinkpad x230, in order to run linux-libre kernel.

I would like to know if anybody has succeed with the modification described here : http://www.thinkwiki.org/wiki/Problem_with_unauthorized_MiniPCI_network_card#Modifying_the_card.27s_ID ?

kind regards