Index: wp-admin/includes/plugin-install.php
===================================================================
--- wp-admin/includes/plugin-install.php	(revision 35592)
+++ wp-admin/includes/plugin-install.php	(working copy)
@@ -491,19 +491,29 @@
 
 	if ( ! empty( $api->banners ) && ( ! empty( $api->banners['low'] ) || ! empty( $api->banners['high'] ) ) ) {
 		$_with_banner = 'with-banner';
-		$low  = empty( $api->banners['low'] ) ? $api->banners['high'] : $api->banners['low'];
-		$high = empty( $api->banners['high'] ) ? $api->banners['low'] : $api->banners['high'];
+		$low  = empty( $api->banners['low'] ) ? false : $api->banners['low'];
+		$high = empty( $api->banners['high'] ) ? false : $api->banners['high'];
+		$lowrtl  = empty( $api->banners['low-rtl'] ) ? false : $api->banners['low-rtl'];
+		$highrtl = empty( $api->banners['high-rtl'] ) ? false : $api->banners['high-rtl'];
 		?>
-		<style type="text/css">
-			#plugin-information-title.with-banner {
-				background-image: url( <?php echo esc_url( $low ); ?> );
+		<style type="text/css"> 
+			<?php if ( $low ) { ?>#plugin-information-title.with-banner { 
+				background-image: url( <?php echo esc_url( $low ); ?> ); 
 			}
-			@media only screen and ( -webkit-min-device-pixel-ratio: 1.5 ) {
-				#plugin-information-title.with-banner {
-					background-image: url( <?php echo esc_url( $high ); ?> );
+			<?php }
+			if ( $lowrtl ) { ?>.rtl #plugin-information-title.with-banner { 
+				background-image: url( <?php echo esc_url( $lowrtl ); ?> ); 
+			}
+			<?php }
+			if ( $high ) { ?>@media only screen and (-webkit-min-device-pixel-ratio: 1.5), only screen and (-o-min-device-pixel-ratio: 15/10), only screen and (min-resolution: 144dpi), only screen and (min-resolution: 1.5dppx)  { 
+				#plugin-information-title.with-banner { 
+					background-image: url( <?php echo esc_url( $high ); ?> ); 
 				}
-			}
-		</style>
+				<?php if ( $highrtl ) { ?>.rtl #plugin-information-title.with-banner { 
+					background-image: url( <?php echo esc_url( $highrtl ); ?> ); 
+				}
+			<?php } ?>}
+		<?php } ?></style>
 		<?php
 	}