diff --git a/clone/utility/sats-install b/clone/utility/sats-install
index bfadf82..ed65f09 100644
--- a/clone/utility/sats-install
+++ b/clone/utility/sats-install
@@ -32,6 +32,15 @@ echo "pi password changed" | sudo -u sats tee -a /home/sats/satsd/log/install.lo
 ################################################
 if [ ! -e /target/install ]; then
 
+	# (1) If no network -> exit #
+	if [ $(systemctl is-active network-online.target) != "active" ]; then
+		echo "not connection, rebooting" | sudo -u sats tee -a /home/sats/satsd/log/install.log > /dev/null;
+		exit 127;
+	fi;
+
+
+	# [1] Installation
+	#========================================================#
 	# (1) Try to install necessary packages
 	sudo apt-get update;
 	echo "package update done" | sudo -u sats tee -a /home/sats/satsd/log/install.log > /dev/null;
@@ -70,9 +79,24 @@ if [ ! -e /target/install ]; then
 	sudo python setup.py install;
 	echo "Built SPI-Py lib" | sudo -u sats tee -a /home/sats/satsd/log/install.log > /dev/null;
 
-	# (4) Reboot to activate SPI #
-	sudo -u sats touch /target/install;
-	echo "Created target file" | sudo -u sats tee -a /home/sats/satsd/log/install.log > /dev/null;
+
+	# [2] Synchronization
+	#========================================================#
+	# (1) Exports #
+	__DIR__=/home/sats/satsd/source;
+
+	source $__DIR__/lib/include/bash/const;
+	source $__DIR__/lib/include/bash/func;
+
+	# (2) Process sync #
+	echo "Synchronization" | sudo -u sats tee -a /home/sats/satsd/log/install.log > /dev/null;
+	test "$($SOURCE_DIR/lib/api/sync)" = "127" && slog "sync failed" - "install" && exit 127;
+
+	sudo -u sats touch /target/sync;
+	echo "Created target file 'sync'" | sudo -u sats tee -a /home/sats/satsd/log/install.log > /dev/null;
+
+
+	# (3) Reboot to activate SPI #
 	echo "Launching first reboot" | sudo -u sats tee -a /home/sats/satsd/log/install.log > /dev/null;
 	sudo reboot;
 
diff --git a/clone/utility/sats-install.service b/clone/utility/sats-install.service
index e46e109..6e48dbf 100644
--- a/clone/utility/sats-install.service
+++ b/clone/utility/sats-install.service
@@ -1,7 +1,7 @@
 [Unit]
 Description=SATS Install Process
-Requires=network-online.target
-After=network-online.target network.target
+Requires=network.target network-online.target
+After=network.target network-online.target
 Before=sats-loop.service
 
 [Service]
@@ -9,7 +9,4 @@ Type=oneshot
 RemainAfterExit=yes
 User=pi
 Group=pi
-ExecStart=/bin/sh /service/sats-install
-
-[Install]
-WantedBy=multi-user.target
\ No newline at end of file
+ExecStart=/bin/bash /service/sats-install
\ No newline at end of file
diff --git a/clone/utility/sats-loop.service b/clone/utility/sats-loop.service
index c390ed8..45ed0c2 100644
--- a/clone/utility/sats-loop.service
+++ b/clone/utility/sats-loop.service
@@ -1,7 +1,6 @@
 [Unit]
 Description=SATS Daemon
-Wants=sats-install.service
-OnFailure=sats-update.service
+Requires=sats-install.service
 
 [Service]
 Type=simple
diff --git a/clone/utility/sats-update.service b/clone/utility/sats-update.service
index 8dba10b..a950246 100644
--- a/clone/utility/sats-update.service
+++ b/clone/utility/sats-update.service
@@ -1,6 +1,6 @@
 [Unit]
 Description=SATS Update Process
-Requires=network-online.target network.target
+Requires=network.target network-online.target
 OnFailure=sats-install.service
 
 [Service]
diff --git a/clone/utility/sats-wpa.service b/clone/utility/sats-wpa.service
new file mode 100644
index 0000000..512af38
--- /dev/null
+++ b/clone/utility/sats-wpa.service
@@ -0,0 +1,14 @@
+[Unit]
+Description=SATS DWC (Dynamic Wireless Credentials)
+Requires=sats-install.service
+Before=network.target
+
+[Service]
+Type=simple
+User=sats
+Group=sats
+ExecStart=/bin/sh /service/sats-loop
+Restart=always
+
+[Install]
+WantedBy=multi-user.target
\ No newline at end of file