I tried to change settings for upload file, but i am getting this error -
Your PHP settings limit the maximum file size per upload to 4 MB.
Depending on your sever environment, these settings may be changed in the system-wide php.ini file, a php.ini file in your Drupal root directory, in your Drupal site's settings.php file, or in the .htaccess file in your Drupal root directory.
Even i made changes to php.ini, settings.php and .htaccess file
I made changes like this
php_value post_max_size 10M
php_value upload_max_filesize 10M
i don't know what should i do now.