Samsung s7 edge g935t enable languages


I have octapus box and a samsung sm-G935T.
I want to enable Greek language and with this step did not enable nothing language.
Please give me a solution.

Detected phone model: SM-G935T
Firmware compiled date: Wed May 11 16:40:22 KST 2016
PDA version: G935TUVS3APD8
CSC version: G935TTMB3APD8
SW version: G935TUVS3APD8
Android version: 6.0.1 (MMB29M)
Country: USA
HW platform: msm8996
HW Chip: MSM8996
HW Modem: MSM8996
Codename: hero2qltetmo
Checking Root:
Phone is Rooted.
Updating languages..
Phone will restart now. Please don’t disconnect cable!
All hidden languages was succesfully enabled.
Performed by 2.3.0 software version