diff --git a/lib/api/source/sync.php b/lib/api/source/sync.php
index ba7ab32..c1da740 100755
--- a/lib/api/source/sync.php
+++ b/lib/api/source/sync.php
@@ -27,15 +27,15 @@
 		}
 
 		/* (3) Try new hash if available */
-		$new = syscall(SOURCE_DIR.'/lib/cyclic-hash/new');
+		$new_hash = syscall(SOURCE_DIR.'/lib/cyclic-hash/new');
 		
-		if( $new === false ){
+		if( $new_hash === false ){
 			slog("cyclic-hash:new returned $new EXIT_STATUS", 'api:sync','update');
 			return 127;
 		}
 
 		/* (4) Fetch data */
-		$data = json_decode(syscall(SOURCE_DIR.'/lib/api/fetch'));
+		$data = json_decode(syscall(SOURCE_DIR.'/lib/api/fetch'), true);
 
 		if( is_null($data) ){
 			slog("api:fetch returned unreadable content", 'api:sync','update');
@@ -62,16 +62,9 @@
 		/* [3] Manage post data
 		=========================================================*/
 		/* (1) Set post data */
-		$postarray = [
-			'token'      => $hash,
-			'data'       => json_encode($data)
-		];
+		$postarray = [ 'data' => json_encode($data) ];
 
-		/* (2) Add renew if renew */
-		if( strlen($new) == 128 )
-			$postarray['renew'] = $new;
-
-		/* (3) Set postdata raw to curl */
+		/* (2) Set postdata raw to curl */
 		curl_setopt($curl, CURLOPT_POSTFIELDS, $postarray);
 
 
@@ -87,9 +80,13 @@
 
 		$wh_tok = preg_replace('/\s/', '', $wh_tok);
 
-		/* (2) Set Auth header digest */
+		/* (2) Calculate @new_hash (default value) */
+		if( strlen($new_hash) != 128 )
+			$new_hash = $hash;
+
+		/* (3) Set Auth header digest */
 		curl_setopt($curl, CURLOPT_HTTPHEADER, [
-			"Authorization: Digest $wh_tok"
+			"Authorization: Digest {$wh_tok}{$hash}{$new_hash}"
 		]);
 
 
diff --git a/lib/gpio/in b/lib/gpio/in
index cd930fb..ae446e7 100755
--- a/lib/gpio/in
+++ b/lib/gpio/in
@@ -32,7 +32,7 @@ test -d /sys/class/gpio/gpio$1 || echo $1 > /sys/class/gpio/export;
 
 # [4] Set mode to OUT
 #========================================================#
-icat /sys/class/gpio/gpio$1/direction | grep -v "in" && echo "in" > /sys/class/gpio/gpio$1/direction;
+cat /sys/class/gpio/gpio$1/direction | grep -v "in" && echo "in" > /sys/class/gpio/gpio$1/direction;
 
 
 
diff --git a/lib/gpio/out b/lib/gpio/out
index 27e47ce..a2446ac 100755
--- a/lib/gpio/out
+++ b/lib/gpio/out
@@ -32,7 +32,7 @@ test -d /sys/class/gpio/gpio$1 || echo $1 > /sys/class/gpio/export;
 
 # [4] Set mode to OUT
 #========================================================#
-icat /sys/class/gpio/gpio$1/direction | grep -v "out" && echo "out" > /sys/class/gpio/gpio$1/direction;
+cat /sys/class/gpio/gpio$1/direction | grep -v "out" && echo "out" > /sys/class/gpio/gpio$1/direction;