Ok I am not a good techie support person but I will try to guide you in how to get things working.
Since you mentioned done setting up on TV, I assume you ady have access to the setup menu.
Connect the dongle follow 1. & 2.
[attachmentid=10372282]
Then HDMI will appear on the front screen, press it. 3.
You might see the screen like this at first
[attachmentid=10372288]
Just press on the touch screen to make it fill the whole screen.
The screen then should look like this with Anycast front screen (I using Mirascreen dongle)
[attachmentid=10372289]
If you still see it black, connect the dongle as above 1. & 2. then go into the setup menu again, you should have these settings
[attachmentid=10372290]
Try to select Miracast standard & Mirror only
[attachmentid=10372294] [attachmentid=10372295]
The settings should save once you exit the setup menu, but verify this by going into settings menu once more. Then unpower and repower the dongle.
Once you did that, go into HU menu and select HDMI again, you should able to see the Anycast front screen then.
Thx babylon bro, the problem i faced was after plug in the dongle and usb cable....then choose source from HDMI...there's nothing on the screen....black and blank...i think the dongle i bought not support by the HU or something wrong...so i'd gave up to try again...anyway...thx for your help ya...