can't root my galaxy grad 2 lte topic

i have tried to root my phone ( sm-g7105) for a while now and everytime i try to root using cf auto root using odin it gets stuck on download mode and this messege comes up
could not do normal boot
odin mode
product name: sm-g7105
current binary:custom
system status:custom
qualcomm Secureboot:enable (CSB)
Warrenty bit: 1
RP SWREV : s1, T1, R1, A1, p1
Write protection: enable
the android version is 4.3
PLS HELP :(