i9505 rooting problem

hi support can you help me please i got Model: GT-I9505

Android Version: 4.3

PDA Version: I9505XXUEMK8

Phone Version: I9505XXUEMK8



when chimera software trys to root phone it gets upto 52% and when it shows this part
Waiting for ADB connection. Be patient! Do NOT disconnect the phone!

Switching recovery then normal mode. Be patient! Do NOT disconnect the phone

Waiting for ADB connection. Be patient! Do NOT disconnect the phone!

Unable to establish ADB connection.



then phone is in menu start up where it says

reboot phone

apply update from adb connection

apply update from external storage

wipe data/factory reset

wipe cache partition

apply update from cache

as when i click reboot system now it says unable to root

root manually or try again has i dont want to select the wrong option and brick the phone please help

via Welcome to gsm-tips http://forum.gsmhosting.com/vbb/f898/i9505-rooting-problem-1761651/