diff --git a/fhem/CHANGED b/fhem/CHANGED
index 41baa5ad7..d40467480 100644
--- a/fhem/CHANGED
+++ b/fhem/CHANGED
@@ -1,5 +1,6 @@
 # Add changes at the top of the list. Keep it in ASCII, and 80-char wide.
 # Do not insert empty lines here, update check depends on it.
+ - bugfix:  50_Signalbot: update contacts on startup, signal-cli 0.10.9
  - feature: 96_Snapcast: group volume now can be set
  - feature: 49_SSCam: text field long for some attributes, the body text 
                       can contain HTML-Tags when sending snaps/recordings
diff --git a/fhem/FHEM/50_Signalbot.pm b/fhem/FHEM/50_Signalbot.pm
index b6a9c6bfd..d5e978559 100755
--- a/fhem/FHEM/50_Signalbot.pm
+++ b/fhem/FHEM/50_Signalbot.pm
@@ -1,6 +1,6 @@
 ##############################################
 #$Id$
-my $Signalbot_VERSION="3.8";
+my $Signalbot_VERSION="3.9";
 # Simple Interface to Signal CLI running as Dbus service
 # Author: Adimarantis
 # License: GPL
@@ -160,6 +160,7 @@ sub Signalbot_Set($@) {					#
 	my $cmd = shift @args;
 	my $account = ReadingsVal($name,"account","none");
 	my $version = $hash->{helper}{version};
+	return "$name not initialized" if (!defined $version);
 	my $multi = $hash->{helper}{multi};
 	my @accounts;
 	@accounts =@{$hash->{helper}{accountlist}} if defined $hash->{helper}{accountlist};
@@ -538,6 +539,8 @@ sub Signalbot_prepareSend($@) {
 sub Signalbot_Get($@) {
 	my ($hash, $name, @args) = @_;
 	my $version = $hash->{helper}{version};	
+	return "$name not initialized" if (!defined $version);
+
 	my $numberOfArgs  = int(@args);
 	return "Signalbot_Get: No cmd specified for get" if ( $numberOfArgs < 1 );
 
@@ -1256,10 +1259,6 @@ sub Signalbot_CallDbus($@) {
 			}
 			my $b=$msg->get_body();
 			my 	@body=@$b;
-			if (!defined $hash->{$function}) {
-				LogUnicode $hash->{NAME}, 5, $hash->{NAME}.": Invalid callback: $function Args:".join(",",@body);
-				return;
-			}
 			LogUnicode $hash->{NAME}, 5, $hash->{NAME}.": DBus callback: $function Args:".join(",",@body);
 			CallFn($hash->{NAME},$function,$hash,@body);
 		}
diff --git a/fhem/contrib/signal/signal_install.sh b/fhem/contrib/signal/signal_install.sh
index ccbe5aac4..f20635c8e 100755
--- a/fhem/contrib/signal/signal_install.sh
+++ b/fhem/contrib/signal/signal_install.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 #$Id:$
-SCRIPTVERSION="3.8"
+SCRIPTVERSION="3.9"
 # Author: Adimarantis
 # License: GPL
 #Install script for signal-cli 
@@ -8,7 +8,7 @@ SIGNALPATH=/opt
 SIGNALUSER=signal-cli
 LIBPATH=/usr/lib
 SIGNALVERSION="0.9.2"	#Default for systems that don't hava Java17
-ALTVERSION="0.10.5"		#Default for systems with Java17
+ALTVERSION="0.10.9"		#Default for systems with Java17
 SIGNALVAR=/var/lib/$SIGNALUSER
 DBSYSTEMD=/etc/dbus-1/system.d
 DBSYSTEMS=/usr/share/dbus-1/system-services
@@ -24,7 +24,14 @@ J17=`apt-cache search --names-only 'openjdk-17-jdk-headless'`
 if ! [ "$JAVA_HOME" = "" ]; then
 	JAVACMD=$JAVA_HOME/bin/java
 fi
-JVER=`$JAVA_HOME/bin/java --version | grep -m1 -o '[0-9][0-9]\.[0-9]'`
+if [ -e "/opt/java" ]; then
+    JVER=`/opt/java/bin/java --version | grep -m1 -o '[0-9][0-9]\.[0-9]'`
+	if [ "$JVER" = "17.0" ]; then
+	  JAVACMD="/opt/java/bin/java"
+	  export JAVA_HOME="/opt/java"
+	 fi
+fi
+JVER=`$JAVACMD --version | grep -m1 -o '[0-9][0-9]\.[0-9]'`
 if [ "$J17" != "" ] || [ "$JVER" = "17.0" ]; then
   SIGNALVERSION=$ALTVERSION
   VEXT="-Linux"
@@ -172,7 +179,7 @@ fi
 GLIBC=`ldd --version |  grep -m1 -o '[0-9]\.[0-9][0-9]' | head -n 1`
 
 IDENTSTR=$ARCH-glibc$GLIBC-$SIGNALVERSION
-KNOWN=("amd64-glibc2.27-0.9.2" "amd64-glibc2.28-0.9.2" "amd64-glibc2.31-0.9.2" "armhf-glibc2.28-0.9.2" "armhf-glibc2.31-0.9.2" "amd64-glibc2.28-0.10.5" "amd64-glibc2.31-0.10.5" "armhf-glibc2.28-0.10.5" "armhf-glibc2.31-0.10.5")
+KNOWN=("amd64-glibc2.27-0.9.2" "amd64-glibc2.28-0.9.2" "amd64-glibc2.31-0.9.2" "armhf-glibc2.28-0.9.2" "armhf-glibc2.31-0.9.2" "amd64-glibc2.28-0.10.9" "amd64-glibc2.31-0.10.9" "armhf-glibc2.28-0.10.9" "armhf-glibc2.31-0.10.9")
 
 GETLIBS=1
 if [[ ! " ${KNOWN[*]} " =~ " ${IDENTSTR} " ]]; then
@@ -207,7 +214,7 @@ echo "Signal version:               $SIGNALVERSION"
 echo "System library path:          $LIBPATH"
 echo "System architecture:          $ARCH"
 echo "System GLIBC version:         $GLIBC"
-echo "Using Java version:           $JAVA_VERSION"
+echo "Using Java version:           $JAVA_VERSION ($JAVACMD)"
 fi
 
 check_and_update() {