Root Nexus 5 Marshmallow without wiping

Hey guys,

I would like to change my LTE Bands with some software and guide I found here. I need root for this.

I am willing to root but not wiping data, if it can't be done without it, I would rather not root it.

Can you guys point me to a guide for Marshmallow? Found some on KK and some on Lollipop, none on Marshmallow.

Thanks a lot!

Dan

Download from this link