Horje
This plugin helps to make a theme easier upgradable.

Noted That:

  • To install correctly this wp-theme-update.zip.
  • Fisrt Download the wp-theme-update.zip to your computer
  • Extract/Open wp-theme-update.zip to Your Computer.
  • Then, Find readme.txt file inside wp-theme-update.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 "wp-theme-update.zip" Plugin to your Local Computer. (Click Download)

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

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

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

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5. Now, Browse "wp-theme-update.zip" Downloaded plugin from your computer, Where you downloaded wp-theme-update.zip According to Step – 1 Above then, click on "Install Now"

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6. Now, Click on "Active Plugin"

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7. Then, See left sidemenu. "WP Theme Update" folder is added on left sidemenu. Now, Click on "WP Theme Update" folder.

   Noted that: If you do not see "WP Theme Update" folder on left sidemenu then, see at left sidemenu "Settings" or "Tools".

8. Now you configure yourself oR Watch video tutorial below about WP Theme Update Configurtions and Settings or How to work "WP Theme Update" in your WordPress site.

 

oR

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 "WP Theme Update" Activated Plugin from Plugin List.
  4. Then, Click on "Settings" from Plugin that is WP Theme Update
  5. Now, Edit/Add/Config the setting and Click on "Save Changes" button,
WP Plugin Setting


Guide

(This plugin hopes that you host a zip file and a list of the theme’s versions to be downloaded)

  1. Upload wp-theme-update.php to the /wp-content/plugins/ directory
  2. Activate the plugin through the ‘Plugins’ menu in WordPress
  3. You need to create a update.php file inside your theme and add a filter to ‘custom_theme_updater_parse_request’ in this file to parse the list of versions, at least
  4. You can also add ‘custom_theme_updater_request_url’ and ‘custom_theme_updater_download_url’ filters to change the URLs
Reffered: https://wordpress.org/