Ok see this means that your tv is the model with low memory and need the apps installed with usb always connected. So I'm sure the smart IPTV will install to your tv and will be available in the apps in your tv.I'm looking for the net iptv app on my tv and nothing comes out. I'm looking for it from samsung apps ... is that so? At the root I don't have any iptv app installed either
I'm sorry to do this but I am going to ask you try again.
Do a quick format on the usb
And then transfer the extracted files to the usb.
You said you tried 2018 and 2019 extracted files to the root.
Try all different versions including 2020 versions.
I actually spoken to smart IPTV team and they tell me it will work for sure