i disabled supersu app and got superuser and i went to udpate binary i got this
parsing manifest ok
lastes ver 3.1.1
isntalled ver 1.61 super su fix database ok
unpacking sutools ok
checking current isntall patch /system/xbin/su
downloading new binary ok
gaining root accses faild
try agin button
Sweet nexus 4, Rooted!
I dont keep a rom for more than a day ! I always try !