Defy & Ad-Hoc wifi network

[Guest netten123321]

I cant connect to ad-hoc wifi network, it is well known software android problem at all devices but i tried like this links:

http://exop.pro/blog/2010/08/15/ad-hoc-support-for-android/

http://szym.net/2010/12/adhoc-wifi-in-android/

when i replace wpa_supplicant, wifi seems doesnt work, i cant find any wifi network (ap or ad-hoc)

please help