After the shutdown of Terrarium TV, all are searching for a perfect alternative. On that list, OneBox HD will serve you as an alternative to Terrarium TV. With the OneBox HD app, you can get all the on-demand video content. Unfortunately, the OneBox HD app is not available on the Amazon App Store. You need to sideload the OneBox HD app on Firestick using its APK file. For sideloading, you can use any of the third-party apps like Downloader or ES File Explorer on Firestick.

How to Sideload OneBox HD Firestick

For sideloading, the steps will vary based on the Fire TV OS. If you are using the updated version of Firestick, you need to enable the Install Unknown Apps toggle. For older versions, you need to enable the Apps from Unknown Sources. Based on your Firestick version, pick a method.

VPN Deal Alert

While streaming online, your IP is both visible to Governments and ISPs which they can use to track your identity and activity online. It is Safe to use a VPN while streaming copyrighted and geo-restricted content.

Luckily NordVPN has launched their Black Friday Deals right now in which they offer 68% off + 3 months extra. NordVPN is the Best VPN service For Firestick available in the market right now.

With NordVPN you can achieve high streaming and downloading speeds, neglect ISP throttling, etc. And also with NordVPN you can generate and store strong passwords, Protect files in an encrypted cloud, and More.

  • Fire OS 7 & above
  • Fire OS 6 & below

How to Sideload OneBox HD on Firestick [Fire OS 7 & Above]

In Fire OS 7 and above, you need to enable Install Unknown Apps for specific third-party apps. If you are using the Firestick with an older Fire OS, update your Firestick to its latest firmware. Here, we are using the Downloader app. So, we need to enable the Install Unknown Apps toggle for the Downloader app.

#1. Make sure that you have installed the latest version of the Downloader app on Firestick.

#2. Click the Settings icon from the Fire TV home screen and tap the My Fire TV option.

Click My Fire TV option

#3. Choose the Developer Options and tap the Install Unknown Apps feature.

Install Unknown Apps feature

#4. Scroll down and choose the Downloader app.

Turn on Downloader toggle to sideload OneBox HD on Firestick

#5. Then, turn on the Install Unknown Apps toggle for the Downloader app.

#6. Now, open the Downloader app on your Firestick.

#7. Go to the Search bar and enter the OneBox HD APK download link (

Downloader app

#8. To proceed further, click on the GO button.

#9. When Downloader connects with the OneBox HD server, downloading process of OneBox HD will begin.

Downloader - OneBox HD on Firestick

#10. After the download, click the Install button.

OneBox HD on Firestick

#11. Tap on the Open button to launch OneBox HD on Firestick.

OneBox HD on Firestick

#12. Then, stream all the movies and TV shows for free.

How to Sideload OneBox HD on Firestick [Fire OS 6 & Below]

#1. On your Firestick home screen, click on the Settings option.

#2. Hover to tap on My Fire TV or Devices.

#3. Further, select Developer Options.

#4. Now, click on Apps from Unknown Sources to turn it on.

 Firestick settings

#5. Finally, tap Turn on on the popup.

 Firestick settings

Sideload OneBox HD on Firestick using ES File Explorer

To sideload APK files on ES File Explorer, you need to get a premium subscription ($9.99 per month). In the free version, a lot of features are restricted.

#1. Open and launch the ES File Explorer app from My Apps & Channels on Firestick.

#2. tap on THE Downloader icon from the home page of the ES File Explorer.

#3. Click on the + icon that reads New from the bottom.

#4. On the Path field, enter the URL of OneBox HD as (

#5. After that, type the name as OneBox HD and click Download Now.

#6. Scroll down and tap on the Download button to proceed further.

#7. After the download, select Open and then click Install.

#8. Then, open the OneBox HD app and stream all the video content.

How to Use OneBox HD on Firestick

#1. Navigate to the My Apps & Channels section on your Firestick.

#2. Choose OneBox HD to open and launch it.

#3. If you are opening OneBox HD for the first time, then you may get a new version available message. Click on OK to proceed further.

#4. Once after the download, tap on the Open button.

#5. Click on the OK button to run the new version when prompted.

#6. Now, you will be landed on the home screen of OneBox HD on Firestick.

#7. On the home screen, you will get the trending movies and TV shows.

#8. Click on the Genres drop-down from the top right to filter contents.

#9. Select any shows or films to start streaming them instantly on Firestick.

Although the latest version of OneBox HD is remote-friendly, you must install Mouse Toggle on Firestick. With this, you will not face any difficulties accessing the app.

Choose either Downloader or ES File Explorer app to install OneBox HD on Firestick. You can enjoy streaming your favorite movies, TV shows, and anything more. We highly recommend you install a VPN for Firestick to stay away from copyright infringement issues. Share your queries in the comments section, and let us resolve them.