please tell me if this root process is working right

is this root process really working for samsung galaxy ace 2 please tell me cause i wanna root my phone


http://www.megawrz.com/android-tips-...-gt-i8160.html


and is there a way to copy/backup my real baseband version
my baseband version is I8160DXLK2

and the new version i will install is I8160XXLD8

is that okay or fine, should i encounter any problem when changing their version?

pls give me info