Noted That:

• To install correctly this all-in-one-favicon.zip .
• Fisrt Download the all-in-one-favicon.zip to your computer
• Extract/Open all-in-one-favicon.zip to Your Computer.
• Then, Find readme.txt file inside all-in-one-favicon.zip and Open readme.txt .
• Now, Read the Requirements of this plugin. Which Wordpress Version and PHP Version are required to run this Plugin in Your Wordpress Site.
• Then, Follow the Tips Below.

Start the Tips:

1. First Download " all-in-one-favicon.zip " Plugin to your Local Computer. (Click Download)

2. Then, Login to your " yourdomain.com/wp-admin " Dashboard.

3. Then, Click on " Plugins " + " Add New " from left sidemenu of Dashboard.

4. Now, Click on "Upload Plugin" button.

5. Now, Browse " all-in-one-favicon.zip "  Downloaded plugin from your computer, Where you downloaded all-in-one-favicon.zip According to Step – 1 Above then, click on " Install Now"

6. Now, Click on " Active Plugin"

7. Then, See left sidemenu. " All In One Favicon " folder is added on left sidemenu. Now, Click on " All In One Favicon " folder.

   Noted that: If you do not see " All In One Favicon " folder on left sidemenu then, see at left sidemenu " Settings " or " Tools ".

8. Now you configure yourself oR Watch video tutorial below about  All In One Favicon Configurtions and Settings or How to work " All In One Favicon " in your WordPress site.

After Activated Plugin According to Step-6 then,

1. Go to " Plugins " + " Installed Plugin " from Wordpress Admin Panel Leftside Menu.
2. or Direct go to: https://yourdomain/wp-admin/plugins.php
3. Then, Find " All In One Favicon " Activated Plugin from Plugin List.
4. Then, Click on " Settings " from Plugin that is All In One Favicon
5. Now, Edit/Add/Config the setting and Click on " Save Changes " button,

Upgrading From A Previous Version

To upgrade from a previous version of this plugin, use the built in update feature of WordPress or copy the files on top of the current installation.

Installing The Plugin

Either use the built in plugin installation feature of WordPress, or extract all files from the ZIP file, making sure to keep the file structure intact, and then upload it to /wp-content/plugins/ .
Then just visit your admin area and activate the plugin. That’s it!

Configuring The Plugin

Go to the settings page and and upload your Favicon(s) or add the path/URL to already existing Favicon(s).

See Also: “Installing Plugins” article on the WP Codex