LGTP260A K20 Plus T-Mobile unlock problem

https://www.droidviews.com/unlock-bo...t-lg-k20-plus/

Mode: Normal
Model: LGTP260A
Build version: Feb 8 201816:49:24May 27 201713:00:00LGTP260A
SW Version: MPSS.JO.2.0.c1.2-00031-8937_GENNS_PACK-1
IMEI: 3552650868...............
BlueTooth Address: 00:00:00:00:00:00
Phone Code:
Elapsed: 1 secs. --> (v9.53)

Checking Login and Password... OK
Ballance: 30 crd.
You have 30 credit(s) left. This operation takes 10 credits.Continue? Yes
Searching modem interface... found COM86
Reading data from phone... error(0)
Elapsed: 4 secs. --> (v9.53)

https://www.youtube.com/watch?v=xezg8tzOIUE i use ths video