diff --git a/apps/voip/3cx/restapi/custom/api.pm b/apps/voip/3cx/restapi/custom/api.pm
index 3c3fb4e2d..b7e61acdb 100644
--- a/apps/voip/3cx/restapi/custom/api.pm
+++ b/apps/voip/3cx/restapi/custom/api.pm
@@ -194,6 +194,12 @@ sub request_api {
         warning_status => '', unknown_status => '', critical_status => '%{http_code} < 200 or %{http_code} >= 300'
     );
 
+    # Some content may be strangely returned, for example : "[{\"Category\":\"provider\",\"Count\":1}]"
+    if ($content =~ /^"(\[.*\])"$/) {
+        $content = $1;
+        $content =~ s/\\"/"/g;
+    }
+
     my $decoded;
     eval {
         $decoded = JSON::XS->new->utf8->decode($content);
@@ -240,6 +246,20 @@ sub api_system_status {
     return $status;
 }
 
+sub internal_update_checker {
+    my ($self, %options) = @_;
+    
+    my $status = $self->request_api(method => 'GET', url_path =>'/api/UpdateChecker/GetFromParams');
+    return $status;
+}
+
+sub api_update_checker {
+    my ($self, %options) = @_;
+
+    my $status = $self->internal_update_checker();
+    return $status;
+}
+
 1;
 
 __END__
diff --git a/apps/voip/3cx/restapi/mode/system.pm b/apps/voip/3cx/restapi/mode/system.pm
index c0356bae6..7e7b9d893 100644
--- a/apps/voip/3cx/restapi/mode/system.pm
+++ b/apps/voip/3cx/restapi/mode/system.pm
@@ -96,8 +96,8 @@ sub new {
     $self->{version} = '1.0';
     $options{options}->add_options(arguments => {
         "unknown-status:s"  => { name => 'unknown_status', default => '' },
-        "warning-status:s"  => { name => 'warning_status', default => '' },
-        "critical-status:s" => { name => 'critical_status', default => '%{health} =~ /false/' },
+        "warning-status:s"  => { name => 'warning_status', default => '%{display} =~ /HasUpdatesAvailable/ && %{health} =~ /true/' },
+        "critical-status:s" => { name => 'critical_status', default => '%{display} !~ /HasUpdatesAvailable/ && %{health} =~ /false/' },
     });
 
     return $self;
@@ -117,6 +117,7 @@ sub manage_selection {
 
     my $single = $options{custom}->api_single_status();
     my $system = $options{custom}->api_system_status();
+    my $update = $options{custom}->api_update_checker();
 
     $self->{service} = {};
     foreach my $item (keys %$single) {
@@ -134,6 +135,10 @@ sub manage_selection {
         display => 'HasUnregisteredSystemExtensions', 
         health => $self->{system}->{HasUnregisteredSystemExtensions} ? 'false' : 'true',
     };
+    $self->{service}->{HasUpdatesAvailable} = {
+        display => 'HasUpdatesAvailable', 
+        health => scalar(@$update) ? 'true' : 'false',
+    };
     
     $self->{global} = {
         calls_active => $system->{CallsActive},
@@ -158,12 +163,14 @@ Can used special variables like: %{health}, %{display}
 
 =item B<--warning-status>
 
-Set warning threshold for status.
+Set warning threshold for status
+(Default: '%{display} =~ /HasUpdatesAvailable/ && %{health} =~ /true/').
 Can used special variables like: %{health}, %{display}
 
 =item B<--critical-status>
 
-Set critical threshold for status (Default: '%{health} =~ /false/').
+Set critical threshold for status
+(Default: '%{display} !~ /HasUpdatesAvailable/ && %{health} =~ /false/').
 Can used special variables like: %{health}, %{display}
 
 =item B<--warning-*> B<--critical-*>