thank i did change all file and folder permissions but not able to update within joomla the version thats why i normaly like to use installatron to do this.
i always same error even when change permissions :
Warning: file_put_contents(/home/wall/domains/wallsolutions.nu/public_html/demo/administrator/components/com_joomlaupdate/restoration.php): failed to open stream: Permission denied in /home/wall/domains/wallsolutions.nu/public_html/demo/libraries/joomla/filesystem/file.php on line 440
