Rename the Update and Delete buttons on the Edit Entry page

gv-rename-update-cancel.php

<?php // DO NOT COPY THIS LINE

add_filter( 'gravityview/edit_entry/button_labels', 'gv_modify_edit_entry_buttons', 10, 4 );

function gv_modify_edit_entry_buttons( $labels, $form, $entry, $view_id ){
	$labels = array(
		'cancel' => __( 'Cancel Update', 'gravityview' ),
		'submit' => __( 'Update Entry', 'gravityview'),
		'next' => __( 'Next page', 'gravityview'), // for multi-page forms
		'previous' => __( 'Previous page', 'gravityview') // for multi-page forms
	);
		return $labels;
}