First of all I apologize for my bad English
Remember that you have to have the bootloader unlocked to make this process
1 - DOWNLOAD THIS FILE
Oficial EGTV - http://bit.ly/OficialROOTP9EGTV
Mirror - http://bit.ly/Mirror2ROOTp9
after i have rooted, is it possible to relock the bootloader and stay rooted ( i hate the yellow boot message ;) )
and why after to have unlocked the bootloader the phone make a factory reset ?
If your lock the bootloader, no problem
could you please upload the twrp version that you've used?:)
which supersu version did you flash?
calm, will prepare a tutorial .... in the coming days ... the version I compiled TWRP is 3.0 .... does not work internal storage