Update to wordpress 4.1.1 Fatal ERROR

When trying to update wordpress this message appears:

PHP Fatal error: Maximum execution time of 60 seconds exceeded in E:\home\reinventso\reinventsonculting.com.br\web\wp-includes\class-http.php on line 1453

Line 1453 go as follow:

private function stream_body( $handle, $data ) {
$data_length = strlen( $data );

if ( $this->max_body_length && ( strlen( $this->body ) + $data_length ) > $this->max_body_length )
$data = substr( $data, 0, ( $this->max_body_length – $data_length ) );

if ( $this->stream_handle ) {
$bytes_written = fwrite( $this->stream_handle, $data );
} else {
$this->body .= $data;
$bytes_written = $data_length;
}