diff --git a/Makefile b/Makefile
index c51370f15..5e123d302 100644
--- a/Makefile
+++ b/Makefile
@@ -103,7 +103,7 @@ CPPFLAGS  += -Wall -Wextra -Werror
 CPPFLAGS  += -Wswitch-enum
 CPPFLAGS  += -Wno-unused-parameter
 CPPFLAGS  += -Wno-missing-braces
-CPPFLAGS  += -Wno-tautological-constant-out-of-range-compare
+# CPPFLAGS  += -Wno-tautological-constant-out-of-range-compare
 
 CFLAGS    += $(CPPFLAGS)
 CXXFLAGS  += $(CPPFLAGS)
diff --git a/src/core/mqtt.cpp b/src/core/mqtt.cpp
index 558a0f9d0..42bbfc59a 100644
--- a/src/core/mqtt.cpp
+++ b/src/core/mqtt.cpp
@@ -66,12 +66,12 @@ std::string Mqtt::lastresponse_ = "";
 // icons from https://materialdesignicons.com used with the UOMs (unit of measurements)
 MAKE_WORD(measurement)
 MAKE_WORD(total_increasing)
-MAKE_WORD_CUSTOM(icondegrees, "mdi:coolant-temperature") // DeviceValueUOM::DEGREES
-MAKE_WORD_CUSTOM(iconpercent, "mdi:percent-outline")     // DeviceValueUOM::PERCENT
-MAKE_WORD_CUSTOM(iconkb, "mdi:memory")                   // DeviceValueUOM::KB
-MAKE_WORD_CUSTOM(iconlmin, "mdi:water-boiler")           // DeviceValueUOM::LMIN
-MAKE_WORD_CUSTOM(iconua, "mdi:lightning-bolt-circle")    // DeviceValueUOM::UA
-MAKE_WORD_CUSTOM(iconnum, "mdi:counter")                 // DeviceValueUOM::NONE
+// MAKE_WORD_CUSTOM(icondegrees, "mdi:coolant-temperature") // DeviceValueUOM::DEGREES
+MAKE_WORD_CUSTOM(iconpercent, "mdi:percent-outline")  // DeviceValueUOM::PERCENT
+MAKE_WORD_CUSTOM(iconkb, "mdi:memory")                // DeviceValueUOM::KB
+MAKE_WORD_CUSTOM(iconlmin, "mdi:water-boiler")        // DeviceValueUOM::LMIN
+MAKE_WORD_CUSTOM(iconua, "mdi:lightning-bolt-circle") // DeviceValueUOM::UA
+MAKE_WORD_CUSTOM(iconnum, "mdi:counter")              // DeviceValueUOM::NONE
 
 uuid::log::Logger Mqtt::logger_{F_(mqtt), uuid::log::Facility::DAEMON};
 
@@ -1149,8 +1149,6 @@ void Mqtt::add_ha_uom(JsonObject doc, const uint8_t type, const uint8_t uom, con
     case DeviceValueUOM::K:
         doc[sc_ha] = F_(measurement);
         doc[dc_ha] = "temperature";
-        if (is_discovery)
-            doc["ic"] = F_(icondegrees); // icon // TODO check if still needed
         // override uom if fahrenheit
         doc[uom_ha] = EMSESP::system_.fahrenheit() ? DeviceValue::DeviceValueUOM_s[DeviceValueUOM::FAHRENHEIT] : DeviceValue::DeviceValueUOM_s[uom];
         break;
@@ -1158,7 +1156,7 @@ void Mqtt::add_ha_uom(JsonObject doc, const uint8_t type, const uint8_t uom, con
         doc[sc_ha] = F_(measurement);
         doc[dc_ha] = "power_factor";
         if (is_discovery)
-            doc["ic"] = F_(iconpercent); // icon // TODO check if still needed
+            doc["ic"] = F_(iconpercent); // icon
         break;
     case DeviceValueUOM::SECONDS:
     case DeviceValueUOM::MINUTES:
diff --git a/src/core/system.cpp b/src/core/system.cpp
index 603352e46..ca66c4004 100644
--- a/src/core/system.cpp
+++ b/src/core/system.cpp
@@ -103,6 +103,7 @@ bool System::command_send(const char * value, const int8_t id) {
     return EMSESP::txservice_.send_raw(value); // ignore id
 }
 
+// returns last response from MQTT
 bool System::command_response(const char * value, const int8_t id, JsonObject output) {
     JsonDocument doc;
     if (DeserializationError::Ok == deserializeJson(doc, Mqtt::get_response())) {
@@ -1159,7 +1160,7 @@ bool System::check_restore() {
 // returns true if we need a reboot
 bool System::check_upgrade(bool factory_settings) {
     bool        missing_version = true;
-    std::string settingsVersion{EMSESP_APP_VERSION}; // default setting version
+    std::string settingsVersion;
 
     if (!factory_settings) {
         // fetch current version from settings file
@@ -1171,6 +1172,8 @@ bool System::check_upgrade(bool factory_settings) {
             LOG_WARNING("No version information found");
             settingsVersion = "3.5.0"; // this was the last stable version without version info
         }
+    } else {
+        settingsVersion = EMSESP_APP_VERSION; // use the current version
     }
 
     version::Semver200_version settings_version(settingsVersion);
@@ -2083,11 +2086,16 @@ bool System::uploadFirmwareURL(const char * url) {
 }
 
 // read command, e.g. read <deviceID> <type ID> [offset] [length] from console or API
+// from Console use quotes so: call system read "<deviceID> <type ID> [offset] [length]"
 bool System::readCommand(const char * data) {
+    if (!data) {
+        return false;
+    }
+
     // extract <deviceID> <type ID> [offset] [length] from string
     char * p;
     char   value[11];
-
+    
     // make a copy so we can iterate, max 15 chars (XX XXXX XX XX)
     char data_args[15];
     strlcpy(data_args, data, sizeof(data_args));
@@ -2102,7 +2110,7 @@ bool System::readCommand(const char * data) {
         strlcpy(value, p, 10);                         // get string
         device_id = (uint8_t)Helpers::hextoint(value); // convert hex to int
         if (!EMSESP::valid_device(device_id)) {
-            LOG_ERROR("Invalid device ID (%d) for read command", device_id);
+            LOG_ERROR("Invalid device ID (%d) in read command", device_id);
             return false; // invalid device
         }
     }
diff --git a/src/version.h b/src/version.h
index 40cdeb6f9..768df1dc8 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1 +1 @@
-#define EMSESP_APP_VERSION "3.7.2-dev.17"
+#define EMSESP_APP_VERSION "3.7.2-dev.18"