Step 1. Go to the About page on the Roku to obtain its IP address.
Write down your IP address
Step 2. Turn on the TV with the Roku plugged in. Enabling developer mode starts by pressing a particular sequence of buttons on the official Roku remote. In order, press:
Home three times, then
Up two times, then
Right once, then
Left once, then
Right once, then
Left once, then
Right once
Click agree to the terms and developer mode options.
Write down the user name and then you'll be asked to create a password.
Step 3. Open up the browser, then type in the above IP address then you can side load apps