z3x box uart not functioning . .

hello i have z3x box from 08/15

uart not working i try multiple times …
drivers installed (bus+port)
finally try use uart from octoplus and wala working…

heres log for proof

Using Version…1.0.0.0026
Selected Port VCP0 = COM9
Selected Model SM-G920A
Selected Task SAMSUNG DRK FIX

Started Samsung DRK Fix…

Phone Found Please Wait…

Details. SM-G920A,N,G920AUCU3BOJ7,G920AUCU3BOJ7,G920AUCU3BOJ7, N,
Model := SM-G920A
UNIQID := 0715F764ACBD363
Phone IMEI := 35853406023110
Phone MEID := null/empty
Default MSL NO NEED RESET EFS…
ROOTKEY IS NOW GOOD..

!!! Success !!!!
Total Time Take…00:00:19
Log Saved

Using Version…1.0.0.0026
Selected Port VCP0 = COM9
Selected Model SM-G920A
Selected Task SAMSUNG DRK FIX

Started Samsung DRK Fix…

Phone Found Please Wait…

Details. SM-G920A,N,G920AUCU3BOJ7,G920AUCU3BOJ7,G920AUCU3BOJ7, N,
Model := SM-G920A
UNIQID := 0715F764ACBD363
Phone IMEI := 35853406023110
Phone MEID := null/empty
Default MSL NO NEED RESET EFS…
ROOTKEY IS NOW GOOD..

!!! Success !!!!
Total Time Take…00:00:19
Log Saved

reach out to developers . . box still in warranty