/**
 * Custom profile form.
 */
function module_profile_settings_form($form, &$form_state, $profile) {
  $form = array(
    '#validate' => array('module_profile_form_validate'),
    '#submit' => array('module_profile_form_submit'),
  );

  $settings_form_fields = array(
    'field_profile_other_location',
    'field_profile_other_notification',
    'field_profile_other_cv',
    'field_profile_other_vat',
  );

  module_profile_add_custom_fields($settings_form_fields, $profile, &$form, &$form_state);

  $form['#profile2'] = $profile;

  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Submit'),
    '#weight' => '1001',
  );

  return $form;
}

/**
 * Add fields from $form_fields to custom form.
 */
function module_profile_add_custom_fields($form_fields, $profile, &$form, &$form_state) {
  $weight = 1;
  foreach ($form_fields as $field_name) {
    field_attach_form('profile2', $profile, $form, $form_state, NULL, array('field_name' => $field_name));
  }
}
/**
 * Custom validate callback to validate profile form fields.
 */
function module_profile_form_validate($form, &$form_state) {
  // Here uploaded file is already validated and added to file_managed table but with status=0
  field_attach_form_validate('profile2', $form['#profile2'], $form, $form_state);
}

/**
 * Custom submit for profile partly forms.
 */
function module_profile_form_submit($form, &$form_state) {
  // This line will put valid fid inside file field inside $form['#profile']
  field_attach_submit('profile2', $form['#profile2'], $form, $form_state);
  // After entity_save() field_data table will get fid, file_managed will change status value to 1
  profile2_save($form['#profile2']);
}