I've made a quick patch for the wizard so it has a checkbutton for
overriding de pin with "".
Just download the source of bluez-gnome:
apt-get source bluez-gnome
Go to the source path of the wizard:
cd bluez-gnome-1.8/wizard
Copy gpshack.diff to here and apply the patch
patch main.c < gpshac
I modified my patch, I've added a textbox for choosing any pincode.
I still take no responsibility for any damage done.
** Attachment added: "Patch for bluez-gnome-1.8/wizard/main.c"
http://launchpadlibrarian.net/19866180/wizardhack.diff
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bluetooth-wizard unable to pair to fixed pin device