Default Can't connect to the internet after root 4.3

I wanted to root my Xperia sp .266. So I followed this guide When it's in 4.12 the internet and root worked. After I install the supersu,pre-rooted fw,kernel,etc. The internet doesn't work. The root is still there. Do I have to use sony update service and update it? So I will lose the root? Is there any other solution without losing the root? Sorry for my English

Nevermind a miracle just happened. After I reboot my phone the internet started working again.