Free Shipping With USPS ONLY, Not UPS

[Ajeh]

Then you could try this on the USPS shipping module and edit the code for:
/includes/modules/shipping/usps.php

          $cost = preg_replace('/[^0-9.]/', '',  $cost);
// bof: Ajust shipping amount amd hide First Class on orders > 50.00
          if ($type == 'FIRST CLASS' && $order->info['total'] >= 50.00) {
            // hide First Class
          } else {
          $methods[] = array('id' => $type,
                             'title' => $title,
                             'cost' => ($cost * $shipping_num_boxes) + (MODULE_SHIPPING_USPS_HANDLING_METHOD == 'Box' ? MODULE_SHIPPING_USPS_HANDLING * $shipping_num_boxes : MODULE_SHIPPING_USPS_HANDLING) );

        }
      }
// eof: Ajust shipping amount amd hide First Class on orders > 50.00

        $this->quotes['methods'] = $methods;

[fabienne]

Thank you very very much for coding that.

[Ajeh]

You are most welcome ...