How to hack Apple keybaord model A1243 to have Insert key on fn button?

I've updated system to kubuntu 13.10 and my keyboard stop working as ussual . I've read https://help.ubuntu.com/community/AppleKeyboard, tried echo 2 > /sys/module/hid_apple/parameters/fnmode without succes

I don't want to remap F13 to Insert or use fn-enter as insert. On my last system (12.04 or earliel) fn as Insert was working but I cannot remeber how I've hack it...

xev doesn't even report fn key.