To make the process easier, I have created a dedicated tool to help you access Recovery Mode on your Android smartphone or tablet.
Recovery Tool for Android
Step 1: Enable Developer Mode
To send commands to your phone, you must first enable Developer Options.
Go to Settings -> About Phone and tap "Build Number" 7 times until
it says you are a developer.
Terminal Output Disconnected
Waiting for action...
Q: How Does it Work?
A: We’re using web-based technology built into the Chromium web browser (WebUSB). You can learn more about WebUSB if you’d like, but it’s the same way Google is able to offer its Android Flash Tool.
Instead of requiring you to download/install ADB & Fastboot tools, enter a terminal, and issue the commands manually.
This website will do all of the heavy lifting for you.