n920t keeps failing unlock


Using Version…1.0.0.0039
Selected Port ssudmdm0000 = COM15
Selected Model SM-N920T
Selected Task SAMSUNG Exynos Unlock
Phone Found Please Wait…
Model := N920T
Ver := N920TUVS4DPH2/N920TTMB4DPH2/N920TUVS4DPH2/N920TUVS4DPH
SN := RF8H61CHFF
IMEI := 35375607526574
UNIQID := 041604A3955C0A0
Unsupported Device..DBG LY1RDoAwCEOv5Mag26fTeI3e/xZSNGkIlEexi7YZg1iqaoxW5ldbOk5M+VEMegkacTJym9ikpxZ 9l5au0kwgSfWDW09wVNjD6IpEq2D7wTikBNpdAOjjBQ==
Unsupported Device or new security.DBG LYzRDYBACENXkiNw3qdEb43uv4WlmpCmPEr9gS9kYlZrG4MLfm okZ8McrfRZmBtz9gtXuxCcQixN9Ymwv0I+sZRlAfGNPNTkarU/yPpUwLYCgRgv
DBG11..JYrRDYAwFAJn4ml539rqGrf/FgabkIOQq4tadOE3zBjUf26qmMhIaaGFT6x42+6BZ5524oeb/pWjPg==
!!! Fail !!!!
Total Time Take…00:00:22
Log Saved
Fails unlock so I can write new cert…
what might be the issue?