Download and put the full zip file onto the Micro SD card (Do not Unzip the file)
Follow the steps below to ugrade.
Insert the Micro SD card into the slot marked TF CARD.
Navigate to Settings > SystemUpdate
“Select” and choose file HDMK-4000-FW-20190323.zip
Tick “Wipe Data” and “Wipe Media” then choose “Update”
A pop up will display to confirm the update, click Update and wait for the machine to complete the process.
When the machine finished upgrading it will restart. Follow the wizard and accept the defaults to complete the process.
To verify the firmware upgrade is success. Go to “Settings” > “Other” and check the “Build number”. It should now display KOT49H.20190323 test-keys
Connect to the internet. Go to Settings > Network and connect to either WIFI or Ethernet Wifi will required you to enter the WIFI password.
Change timezone. Go to Settings > Other > More Settings. Scroll down to Date & Time and Select time zone. Select your timezone.
Change security settings to install apps. Still in More Settings go to Security. Tick Allow installation of apps from unknown sources. Select OK to agree.
Tick Unknown sources
Install KTVHOST & Youtube. Exit out to the Main screen. Go to My Apps > YS Apps Scroll down to KTVHost (HDMK-1102 & HDMK-4000 ONLY) and install it. Once finish installing KTVHost, then install YouTube