Exclamation sys/kernel/security/ric/enable missing?

Hello! I've just bought my Xperia I've 'rooted' it with root tool v11 I've to say it got stuck at cleaning files or something, as my phone got locked an this moment :/ so I disconnected and root was allowed but soon I noticed it didn't mount system as RW I've tried with the command described as 0 > sys/kernel/security/ric/enable but it says Unable to create file permission denied, so I checked on this directory and It doesn't have enabled file! Should I root again? I DONT want to flash Rom by flashtool again! How can I simply fix this?? Thanks In Advance
I'm on stock 14.4.A.0.108