Setup Android Streaming Devices Like Onn 4k Plus

To configure your Onn 4K Plus streaming device for full sideloading capabilities and a clean interface, follow this exact step-by-step setup sequence.

Step 1: Enable Developer Mode

Unlocking Developer Options is necessary to allow third-party tools to interact with your system.

Click the Gear (Settings) icon in the top-right corner of the home screen and select All Settings.
Scroll down and choose System, then select About.
Scroll down to highlight Android TV OS Build.
Press the center OK/Select button on your remote 7 times.
A message stating "You are now a developer!" will flash on-screen.

Step 2: Shut Off Google Play Protect

Google Play Protect often flags or auto-deletes niche third-party apks. Disabling it stops this behavior.

Go back to the main Settings menu and click Apps.
Scroll down and select Security (or Security & Restrictions depending on your firmware version).
Locate Scan apps with Play Protect and slide the toggle to Off.

Step 3: Delete Unnecessary Apps

Free up internal storage space by removing stock or pre-installed bloatware.

While still under Settings > Apps, click on See all apps.
Scroll through the list and click on any app you do not intend to use.
Click Uninstall and confirm by selecting OK.

Note: For factory system apps that cannot be deleted, select Disable or Uninstall updates instead to strip them of storage footprint.

Step 4: Sideload via Downloader Codes

Use the industry standard utility to install custom streaming applications.

Go to the native Google Play Store on your device, search for Downloader (the orange icon by AFTVnews), and install it.
Open Downloader once and click Allow when prompted for storage permissions.
Exit to Settings > Apps > Security (or Install unknown apps).
Find Downloader in the list and flip its toggle to Allowed/On to grant it installation privileges.
Re-open Downloader, click into the central URL box, or the Numeral Keypad to the right and type your target numeric shortcut code that was sent to you with your purchase and hit Go.
If install warning or any warning pops up about app not being certified, you must click install anyway.
If during install you are asked to use internal storage click yes.
After app Installation do not hit Open, select Done and then Delete, confirm delete to remove the no longer needed installation file. This just keeps your storage maximized.
Find new app name and icon that you just installed on homepage, hover over it, press select and hold in for 3 seconds. Now select move, and use arrow pad to move over to 1st app position for easiest access. Press the back button to exit move app.
Select new App to open and click add playlist, popup menu will say you need to allow app to display over other apps. Scroll down until you see app name, toggle this on, then you can add the playlist information by logging into the correct server that came with your subscription, username and password then click next.
After app install shows how many channels are included , click done. Your app will be opened within a minute or so to begin watching TV.

We also recommend Apps Only Mode on All Onn devices, Chromecast, and Android Streaming Devices that allow apps only mode to clean the home page up.

Step 5: Enable Apps Only Mode

This removes personalized recommendations, ads, and cluttered rows from the home screen

Go to Settings and select Accounts & Sign In (or Accounts & Profiles).
Click directly on your Google Profile name.
Scroll 1st to Autoplay Video and Toggle It Off.
Scroll down, locate Apps only mode, and toggle it to On.
Confirm by choosing Turn On and press the Home button on your remote.