diff -up wordpress/wp-admin/includes/admin-filters.php.noupdate wordpress/wp-admin/includes/admin-filters.php

--- wordpress/wp-admin/includes/admin-filters.php.noupdate	2021-07-21 13:55:03.381224813 +0200

+++ wordpress/wp-admin/includes/admin-filters.php	2021-07-21 13:55:11.920208285 +0200

@@ -113,7 +113,6 @@ add_action( 'personal_options_update', '

 add_action( 'load-plugins.php', 'wp_plugin_update_rows', 20 ); // After wp_update_plugins() is called.

 add_action( 'load-themes.php', 'wp_theme_update_rows', 20 ); // After wp_update_themes() is called.

-add_action( 'admin_notices', 'update_nag', 3 );

 add_action( 'admin_notices', 'deactivated_plugins_notice', 5 );

 add_action( 'admin_notices', 'paused_plugins_notice', 5 );

 add_action( 'admin_notices', 'paused_themes_notice', 5 );

diff -up wordpress/wp-admin/includes/class-core-upgrader.php.noupdate wordpress/wp-admin/includes/class-core-upgrader.php

--- wordpress/wp-admin/includes/class-core-upgrader.php.noupdate	2021-06-19 23:37:57.000000000 +0200

+++ wordpress/wp-admin/includes/class-core-upgrader.php	2021-07-21 13:55:03.381224813 +0200

@@ -271,6 +271,9 @@ class Core_Upgrader extends WP_Upgrader

 	 * @return bool True if we should update to the offered version, otherwise false.

 	 */

 	public static function should_update_to_version( $offered_ver ) {

+		// RPM: nether allow core update

+		return false;

+

 		require ABSPATH . WPINC . '/version.php'; // $wp_version; // x.y.z

 		$current_branch = implode( '.', array_slice( preg_split( '/[.-]/', $wp_version ), 0, 2 ) ); // x.y

diff -up wordpress/wp-admin/includes/class-wp-automatic-updater.php.noupdate wordpress/wp-admin/includes/class-wp-automatic-updater.php

--- wordpress/wp-admin/includes/class-wp-automatic-updater.php.noupdate	2021-04-16 14:01:15.000000000 +0200

+++ wordpress/wp-admin/includes/class-wp-automatic-updater.php	2021-07-21 13:55:03.381224813 +0200

@@ -38,7 +38,7 @@ class WP_Automatic_Updater {

 		}

 		// More fine grained control can be done through the WP_AUTO_UPDATE_CORE constant and filters.

-		$disabled = defined( 'AUTOMATIC_UPDATER_DISABLED' ) && AUTOMATIC_UPDATER_DISABLED;

+		$disabled = !defined( 'AUTOMATIC_UPDATER_DISABLED' ) || AUTOMATIC_UPDATER_DISABLED;

 		/**

 		 * Filters whether to entirely disable background updates.

diff -up wordpress/wp-admin/includes/file.php.noupdate wordpress/wp-admin/includes/file.php

--- wordpress/wp-admin/includes/file.php.noupdate	2021-05-24 21:24:57.000000000 +0200

+++ wordpress/wp-admin/includes/file.php	2021-07-21 13:55:03.381224813 +0200

@@ -1992,7 +1992,7 @@ function WP_Filesystem( $args = false, $

  */

 function get_filesystem_method( $args = array(), $context = '', $allow_relaxed_file_ownership = false ) {

 	// Please ensure that this is either 'direct', 'ssh2', 'ftpext', or 'ftpsockets'.

-	$method = defined( 'FS_METHOD' ) ? FS_METHOD : false;

+	$method = defined( 'FS_METHOD' ) ? FS_METHOD : 'direct';

 	if ( ! $context ) {

 		$context = WP_CONTENT_DIR;

diff -up wordpress/wp-admin/includes/update.php.noupdate wordpress/wp-admin/includes/update.php

--- wordpress/wp-admin/includes/update.php.noupdate	2021-05-17 19:04:01.000000000 +0200

+++ wordpress/wp-admin/includes/update.php	2021-07-21 13:55:03.381224813 +0200

@@ -341,12 +341,7 @@ function update_right_now_message() {

 		$cur = get_preferred_from_update_core();

 		if ( isset( $cur->response ) && 'upgrade' === $cur->response ) {

-			$msg .= sprintf(

-				'%s ',

-				network_admin_url( 'update-core.php' ),

-				/* translators: %s: WordPress version number, or 'Latest' string. */

-				sprintf( __( 'Update to %s' ), $cur->current ? $cur->current : __( 'Latest' ) )

-			);

+			$msg .= '';

 		}

 	}

diff -up wordpress/wp-includes/load.php.noupdate wordpress/wp-includes/load.php

--- wordpress/wp-includes/load.php.noupdate	2021-06-23 21:05:57.000000000 +0200

+++ wordpress/wp-includes/load.php	2021-07-21 13:55:03.381224813 +0200

@@ -1579,7 +1579,7 @@ function wp_is_file_mod_allowed( $contex

 	 * @param bool   $file_mod_allowed Whether file modifications are allowed.

 	 * @param string $context          The usage context.

 	 */

-	return apply_filters( 'file_mod_allowed', ! defined( 'DISALLOW_FILE_MODS' ) || ! DISALLOW_FILE_MODS, $context );

+	return apply_filters( 'file_mod_allowed', defined( 'DISALLOW_FILE_MODS' ) && ! DISALLOW_FILE_MODS, $context );

 }

 /**

diff -up wordpress/wp-includes/update.php.noupdate wordpress/wp-includes/update.php

--- wordpress/wp-includes/update.php.noupdate	2021-05-17 19:04:01.000000000 +0200

+++ wordpress/wp-includes/update.php	2021-07-21 13:55:03.381224813 +0200

@@ -926,10 +926,6 @@ function _maybe_update_themes() {

  * @since 3.1.0

  */

 function wp_schedule_update_checks() {

-	if ( ! wp_next_scheduled( 'wp_version_check' ) && ! wp_installing() ) {

-		wp_schedule_event( time(), 'twicedaily', 'wp_version_check' );

-	}

-

 	if ( ! wp_next_scheduled( 'wp_update_plugins' ) && ! wp_installing() ) {

 		wp_schedule_event( time(), 'twicedaily', 'wp_update_plugins' );

 	}