diff --git a/lib/framework/UploadFileService.cpp b/lib/framework/UploadFileService.cpp
index 188f29bf0..a9b4dea22 100644
--- a/lib/framework/UploadFileService.cpp
+++ b/lib/framework/UploadFileService.cpp
@@ -71,7 +71,7 @@ void UploadFileService::handleUpload(AsyncWebServerRequest * request, const Stri
                 return;
             }
 #elif CONFIG_IDF_TARGET_ESP32S3
-            if (len > 12 && (data[0] != 0xE9 || data[12] != 3)) {
+            if (len > 12 && (data[0] != 0xE9 || data[12] != 9)) {
                 handleError(request, 503); // service unavailable
                 return;
             }
diff --git a/src/device_library.h b/src/device_library.h
index 1a113e23a..3ef772b08 100644
--- a/src/device_library.h
+++ b/src/device_library.h
@@ -48,6 +48,7 @@
 {208, DeviceType::BOILER, "Logamax Plus/GB192/Condens GC9000/Greenstar ErP", DeviceFlags::EMS_DEVICE_FLAG_NONE},
 {210, DeviceType::BOILER, "Cascade MC400", DeviceFlags::EMS_DEVICE_FLAG_NONE},
 {211, DeviceType::BOILER, "EasyControl Adapter", DeviceFlags::EMS_DEVICE_FLAG_NONE},
+{219, DeviceType::BOILER, "Greenstar HIU", DeviceFlags::EMS_DEVICE_FLAG_NONE},
 {234, DeviceType::BOILER, "Logamax Plus GB122/Condense 2300", DeviceFlags::EMS_DEVICE_FLAG_NONE},
 
 // Controllers - 0x09 / 0x10 / 0x50
diff --git a/src/locale_common.h b/src/locale_common.h
index 3419b9a47..dcaaf2e5e 100644
--- a/src/locale_common.h
+++ b/src/locale_common.h
@@ -291,7 +291,7 @@ MAKE_PSTR_ENUM(enum_modetype5, FL_(off), FL_(on))
 
 MAKE_PSTR_ENUM(enum_reducemode, FL_(nofrost), FL_(reduce), FL_(room), FL_(outdoor))
 MAKE_PSTR_ENUM(enum_reducemode1, FL_(outdoor), FL_(room), FL_(reduce)) // RC310 values: 1-3
-MAKE_PSTR_ENUM(enum_nofrostmode, FL_(off), FL_(room), FL_(outdoor))
+MAKE_PSTR_ENUM(enum_nofrostmode, FL_(off), FL_(outdoor), FL_(room))
 MAKE_PSTR_ENUM(enum_nofrostmode1, FL_(room), FL_(outdoor), FL_(room_outdoor))
 
 MAKE_PSTR_ENUM(enum_controlmode, FL_(off), FL_(optimized), FL_(simple), FL_(mpc), FL_(room), FL_(power), FL_(constant))
diff --git a/src/mqtt.cpp b/src/mqtt.cpp
index e5172cf2d..1f9f644ab 100644
--- a/src/mqtt.cpp
+++ b/src/mqtt.cpp
@@ -815,8 +815,8 @@ void Mqtt::process_queue() {
 #if defined(EMSESP_DEBUG)
         LOG_DEBUG("[DEBUG] Waiting for QOS-ACK");
 #endif
-        // if we don't get the ack within 10 minutes, republish with new packet_id
-        if (uuid::get_uptime_sec() - last_publish_queue_ < 600) {
+        // if we don't get the ack within 10 seconds, republish with new packet_id
+        if (uuid::get_uptime_sec() - last_publish_queue_ < 10) {
             return;
         }
     }
diff --git a/src/system.cpp b/src/system.cpp
index 36a816126..ae41d0d9b 100644
--- a/src/system.cpp
+++ b/src/system.cpp
@@ -659,7 +659,6 @@ void System::network_init(bool refresh) {
     }
 
     last_system_check_ = 0; // force the LED to go from fast flash to pulse
-    send_heartbeat();
 
     if (phy_type_ == PHY_type::PHY_TYPE_NONE) {
         return;
@@ -715,7 +714,6 @@ void System::system_check() {
                     digitalWrite(led_gpio_, hide_led_ ? !LED_ON : LED_ON);
 #endif
                 }
-                send_heartbeat();
             } else {
                 // turn off LED so we're ready to the flashes
                 if (led_gpio_) {
diff --git a/src/web/WebSettingsService.cpp b/src/web/WebSettingsService.cpp
index 7fa82880f..03b879fb1 100644
--- a/src/web/WebSettingsService.cpp
+++ b/src/web/WebSettingsService.cpp
@@ -247,20 +247,27 @@ StateUpdateResult WebSettings::update(JsonObject & root, WebSettings & settings)
     prev                 = settings.bool_format;
     settings.bool_format = root["bool_format"] | EMSESP_DEFAULT_BOOL_FORMAT;
     EMSESP::system_.bool_format(settings.bool_format);
-    if (Mqtt::ha_enabled())
+    if (Mqtt::ha_enabled()) {
         check_flag(prev, settings.bool_format, ChangeFlags::MQTT);
+    }
 
     prev                 = settings.enum_format;
     settings.enum_format = root["enum_format"] | EMSESP_DEFAULT_ENUM_FORMAT;
     EMSESP::system_.enum_format(settings.enum_format);
-    if (Mqtt::ha_enabled())
+    if (Mqtt::ha_enabled()) {
         check_flag(prev, settings.enum_format, ChangeFlags::MQTT);
+    }
+
+    String old_locale = settings.locale;
+    settings.locale   = root["locale"] | EMSESP_DEFAULT_LOCALE;
+    EMSESP::system_.locale(settings.locale);
+    if (Mqtt::ha_enabled() && !old_locale.equals(settings.locale)) {
+        add_flags(ChangeFlags::MQTT);
+    }
 
     //
     // without checks or necessary restarts...
     //
-    settings.locale = root["locale"] | EMSESP_DEFAULT_LOCALE;
-    EMSESP::system_.locale(settings.locale);
 
     settings.trace_raw = root["trace_raw"] | EMSESP_DEFAULT_TRACELOG_RAW;
     EMSESP::trace_raw(settings.trace_raw);