Part 1: Prepare Your FireStick To Download STBEmu Pro
The first step is to install the Downloader app. You can use the Find > Search option on the home screen to get Downloader from the Amazon Store.

The second step is to enable Downloader for sideloading. By default, your FireStick does not allow the installation of third-party apps. Therefore, you need to tweak some settings to allow your FireStick to install a third-party app. This factor brings us to the second step, allowing installation from unknown sources. To do this, navigate to the Developer options under Settings and turn on Apps from Unknown Sources.

If you already have the Downloader app on your FireStick and the settings set to allow installation from unknown sources, skip to part 2.

Part 2: Install STBEmu Pro on Your FireStick
Follow the below steps to sideload STBEmu Pro on your FireStick:

1. On your FireStick home screen, click My Apps.

2. Navigate to the Downloader app and click on it.

3. Click the URL box.

4. Enter the following URL: firesticktricks.com/stbe and click Go, then wait a few moments for the APK file to download.

5. Click Install.

6. Click Done.

7. Click Delete to remove the APK file from your FireStick.

8. Click Delete again to confirm the previous action.

This is how you install STBEmu Pro on FireStick.

Your FireStick / Fire TV is now all ready to stream your favorite content.