diff --git a/contrib/etc/ebusd/mqtt-hassio.cfg b/contrib/etc/ebusd/mqtt-hassio.cfg
index e7882350..d71f93d1 100644
--- a/contrib/etc/ebusd/mqtt-hassio.cfg
+++ b/contrib/etc/ebusd/mqtt-hassio.cfg
@@ -428,7 +428,7 @@ def_global_updatecheck_device-payload =  {
   },
   "state_topic":"%topic",
   "name":"%name",
-  "value_template":"{%% set my_new = value_json|truncate(255)|regex_replace(find='^[^,]*|, device firmware |,.*| available',replace='') %%}{%% set my_cur = 'old' %%}{%% if my_new == '' %%}{%% set my_new = 'current' %%}{%% set my_cur = 'current' %%}{%% endif %%}{{ {'installed_version':my_cur,'latest_version':my_new,'entity_picture':'https://adapter.ebusd.eu/favicon.ico','release_url':'https://adapter.ebusd.eu/firmware/ChangeLog'} | tojson }}"
+  "value_template":"{%% set my_new = value_json|truncate(255)|regex_replace(find='^[^,]*|, device firmware |,.*| available',replace='') %%}{%% set my_ds = 'v31/firmware/' %%}{%% if my_new is search('up to date') %%}{%% set my_ds = my_new|regex_replace(find=' .*',replace='/') %%}{%% set my_new = 'current' %%}{%% set my_cur = 'current' %%}{%% else %%}{%% set my_cur = 'old' %%}{%% if my_new is search(' ') %%}{%% set my_ds = my_new|regex_replace(find=' .*',replace='/') %%}{%% set my_new = my_new|regex_replace(find='.* ',replace='') %%}{%% else %%}{%% if my_new == '' %%}{%% set my_new = 'current' %%}{%% set my_cur = 'current' %%}{%% endif %%}{%% endif %%}{%% endif %%}{{ {'installed_version':my_cur,'latest_version':my_new,'entity_picture':'https://adapter.ebusd.eu/'+my_ds+'favicon.ico','release_url':'https://adapter.ebusd.eu/'+my_ds+'ChangeLog'} | tojson }}"
  }
 
 # the topic and payload to listen to in order to republish all config messages.
diff --git a/contrib/updatecheck/calcversions.sh b/contrib/updatecheck/calcversions.sh
index a1333eb1..fc485e24 100755
--- a/contrib/updatecheck/calcversions.sh
+++ b/contrib/updatecheck/calcversions.sh
@@ -2,12 +2,11 @@
 version=`head -n 1 ../../VERSION`
 revision=`git describe --always`
 echo "ebusd=${version},${revision}" > versions.txt
-# cp versions.txt > oldversions.txt
 devver=`curl -s https://adapter.ebusd.eu/v31/firmware/ChangeLog|grep "<h[0-9].*>Version "|head -n 1|sed -e 's#.*<code[^>]*>##' -e 's#<.*##' -e 's# ##'`
 devbl=`curl -s https://adapter.ebusd.eu/v31/firmware/ChangeLog|grep "<h[0-9].*>Bootloader version"|head -n 1|sed -e 's#.*<code[^>]*>##' -e 's#<.*##' -e 's# ##'`
 echo "device=${devver},${devbl}" >> versions.txt
-devver=`curl -s https://adapter.ebusd.eu/v5/ChangeLog|grep "<h[0-9].*>Version "|head -n 1|sed -e 's#.*<code[^>]*>##' -e 's#<.*##' -e 's# ##'`
-echo "device=${devver},${devver}" >> versions.txt
+devver=`curl -s https://adapter.ebusd.eu/v5/ChangeLog|grep "<h[0-9].*>Version "|head -n 1|sed -e 's#.*id="\([^"]*\)".*<code[^>]*>\([^<]*\)<.*#\2,\2,\1#'`
+echo "device=${devver}" >> versions.txt
 cp versions.txt cdnversions.txt
 files=`find config/de -type f -or -type l`
 ../../src/lib/ebus/test/test_filereader $files|sed -e 's#^config/de/##' -e 's#^\([^ ]*\) #\1=#' -e 's# #,#g'|sort >> versions.txt
@@ -17,7 +16,6 @@ for filever in $(../../src/lib/ebus/test/test_filereader $files|sed -e 's#^confi
   ver=${filever#*=}
   sed -i -e "s#^$file=\(.*\)\$#$file=\1,$ver#" versions.txt
 done
-#./oldtest_filereader $files|sed -e 's#^config/##' -e 's#^\([^ ]*\) #\1=#' -e 's# #,#g'|sort >> oldversions.txt
 curl -sS https://ebus.github.io/en/versions.json -o veren.json
 curl -sS https://ebus.github.io/de/versions.json -o verde.json
 node -e 'fs=require("fs");e=JSON.parse(fs.readFileSync("veren.json","utf-8"));d=JSON.parse(fs.readFileSync("verde.json","utf-8"));console.log(Object.entries(d).map(([k,de])=>{en=e[k];return `${k}=${de.hash},${de.size},${de.mtime},${en.hash},${en.size},${en.mtime}`;}).join("\n"))'|sort >> cdnversions.txt
diff --git a/contrib/updatecheck/index.php b/contrib/updatecheck/index.php
index ec6bc51e..d40cfa5f 100644
--- a/contrib/updatecheck/index.php
+++ b/contrib/updatecheck/index.php
@@ -5,7 +5,7 @@ if (substr($agent, 0, 5)==='ebusd') {
   $r = @file_get_contents('php://input');
   header('Content-Type: text/plain');
   $r = @json_decode($r, true);
-  echo checkUpdate(@$r['v'], @$r['r'], @$r['a'], @$r['dv'], @$r['l'], @$r['lc'], @$r['cp']);
+  echo checkUpdate(@$r['v'], @$r['r'], @$r['a'], @$r['dv'], @$r['di'], @$r['l'], @$r['lc'], @$r['cp']);
   exit;
 }
 readVersions();
@@ -23,7 +23,7 @@ $ref = @file_get_contents('ebusd-configuration/.git/refs/heads/master');
   }
 ?>
   <p>latest ebusd version: <?=$versions['ebusd'][0]?></p>
-  <p>latest device firmware: v5=<?=$versions['devicesame'][0]?>, v3*=<?=$versions['device'][0]?></p>
+  <p>latest device firmware: v5*=<?=$versions['devicesame'][0]?>, v3*=<?=$versions['device'][0]?></p>
   <p>config files:<table><thead><th>File</th><th>German</th><th>English</th></thead><tbody>
 <?php
   $func = function($v, $k) {
diff --git a/contrib/updatecheck/prepend.inc b/contrib/updatecheck/prepend.inc
index 5ce705eb..1e409947 100644
--- a/contrib/updatecheck/prepend.inc
+++ b/contrib/updatecheck/prepend.inc
@@ -14,7 +14,7 @@ function readVersions($prefix='') {
     if (count($val)>1) {
       $key = $val[0];
       $val = explode(',', $val[1]);
-      if ($key==='device' && count($val)===2 && $val[0]===$val[1]) {
+      if ($key==='device' && count($val)>=2 && $val[0]===$val[1]) {
         $key = 'devicesame';
       }
       $versions[$key] = $val;
@@ -23,7 +23,7 @@ function readVersions($prefix='') {
   array_walk($v, $func);
   return true;
 }
-function checkUpdate($ebusdVersion, $ebusdRelease, $architecture, $deviceVersion, $loadedFiles, $language, $cdnPath) {
+function checkUpdate($ebusdVersion, $ebusdRelease, $architecture, $deviceVersion, $deviceId, $loadedFiles, $language, $cdnPath) {
   if (!$ebusdVersion) {
     return 'invalid request';
   }
@@ -43,7 +43,12 @@ function checkUpdate($ebusdVersion, $ebusdRelease, $architecture, $deviceVersion
     $ver = strtok('.');
     if ($ver) {
       $key = ($ver===strtok('.')) ? 'devicesame' : 'device';
-      if ($ver!==$versions[$key][0]) {
+      $devTypes = array('00'=>'v5', '01'=>'v5-c6', '00n'=>'v5', '01n'=>'');
+      $devType = $key==='devicesame' && strlen($deviceId)===9*2 && substr($deviceId,-2)==='00' ? $devTypes[substr($deviceId,-4,2).(substr($deviceId,-6,2)==='00'?'n':'')] : '';
+      if ($devType) {
+        $devVer = $versions[$key][0];
+        $ret .= ', device firmware '.$devType.' '.$devVer.($ver===$devVer ? ' up to date' : ' available');
+      } else if ($ver!==$versions[$key][0]) {
         $ret .= ', device firmware '.$versions[$key][0].' available';
       }
     }
diff --git a/src/lib/ebus/device.h b/src/lib/ebus/device.h
index 8d023ccc..646eeec7 100755
--- a/src/lib/ebus/device.h
+++ b/src/lib/ebus/device.h
@@ -115,7 +115,7 @@ class Device {
    * Format device infos in JSON format.
    * @param output the @a ostringstream to append the infos to.
    */
-  virtual void formatInfoJson(ostringstream* output) const {}
+  virtual void formatInfoJson(ostringstream* output) {}
 
   /**
    * @return whether the device supports checking for version updates.
diff --git a/src/lib/ebus/device_trans.cpp b/src/lib/ebus/device_trans.cpp
index 61a2ba78..45805052 100755
--- a/src/lib/ebus/device_trans.cpp
+++ b/src/lib/ebus/device_trans.cpp
@@ -159,10 +159,21 @@ void EnhancedDevice::formatInfo(ostringstream* ostream, bool verbose, bool prefi
   }
 }
 
-void EnhancedDevice::formatInfoJson(ostringstream* ostream) const {
+void EnhancedDevice::formatInfoJson(ostringstream* ostream) {
   string ver = getEnhancedVersion();
   if (!ver.empty()) {
     *ostream << ",\"dv\":\"" << ver << "\"";
+    if (m_enhInfoIdRequestNeeded) {
+      if (!m_enhInfoIdRequested) {
+        result_t ret = requestEnhancedInfo(1);
+        if (ret == RESULT_OK) {
+          requestEnhancedInfo(0xff);
+        }
+      }
+      if (!m_enhInfoId.empty()) {
+        *ostream << ",\"di\":\"" << m_enhInfoId << "\"";
+      }
+    }
   }
 }
 
@@ -197,6 +208,7 @@ result_t EnhancedDevice::requestEnhancedInfo(symbol_t infoId, bool wait) {
   uint8_t buf[] = makeEnhancedSequence(ENH_REQ_INFO, infoId);
   result_t result = m_transport->write(buf, 2);
   if (result == RESULT_OK) {
+    m_enhInfoIdRequested = m_enhInfoIdRequested || (infoId == 1);
     m_infoBuf[0] = infoId;
     m_infoLen = 1;
     m_infoPos = 1;
@@ -350,6 +362,9 @@ result_t EnhancedDevice::notifyTransportStatus(bool opened) {
     m_infoLen = 0;
     m_enhInfoVersion = "";
     m_enhInfoIsWifi = false;
+    m_enhInfoIdRequestNeeded = false;
+    m_enhInfoIdRequested = false;
+    m_enhInfoId = "";
     m_enhInfoTemperature = "";
     m_enhInfoSupplyVoltage = "";
     m_enhInfoBusVoltage = "";
@@ -545,6 +560,7 @@ void EnhancedDevice::notifyInfoRetrieved() {
         stream << "[" << setfill('0') << setw(2) << hex << static_cast<unsigned>(data[6])
                << setw(2) << static_cast<unsigned>(data[7]) << "]";
       }
+      m_enhInfoIdRequestNeeded = len >= 8 && data[0] == data[5] && data[2] == data[6] && data[3] == data[7];
       m_enhInfoVersion = stream.str();
       stream.str(" ");
       stream << "firmware " << m_enhInfoVersion;
@@ -557,10 +573,13 @@ void EnhancedDevice::notifyInfoRetrieved() {
     case 0x0901:
     case 0x0802:
     case 0x0302:
-      stream << (id == 1 ? "ID" : "config");
+      stream << (id == 1 ? "ID " : "config ");
       stream << hex << setfill('0');
       for (size_t pos = 0; pos < len; pos++) {
-        stream << " " << setw(2) << static_cast<unsigned>(data[pos]);
+        stream << setw(2) << static_cast<unsigned>(data[pos]);
+      }
+      if (id == 1 && data[8] == 0) {
+        m_enhInfoId = stream.str().substr(3);
       }
       if (id == 2 && (data[2]&0x3f) != 0x3f) {
         // non-default arbitration delay
diff --git a/src/lib/ebus/device_trans.h b/src/lib/ebus/device_trans.h
index 2a69034b..de40e1e0 100755
--- a/src/lib/ebus/device_trans.h
+++ b/src/lib/ebus/device_trans.h
@@ -72,7 +72,7 @@ class BaseDevice : public Device, public TransportListener {
   }
 
   // @copydoc
-  virtual void formatInfoJson(ostringstream* output) const {}
+  virtual void formatInfoJson(ostringstream* output) {}
 
   // @copydoc
   virtual result_t notifyTransportStatus(bool opened) {
@@ -139,14 +139,15 @@ class EnhancedDevice : public BaseDevice, public EnhancedDeviceInterface {
    */
   explicit EnhancedDevice(Transport* transport)
   : BaseDevice(transport), EnhancedDeviceInterface(), m_resetTime(0), m_resetRequested(false),
-    m_extraFeatures(0), m_infoReqTime(0), m_infoLen(0), m_infoPos(0), m_enhInfoIsWifi(false) {
+    m_extraFeatures(0), m_infoReqTime(0), m_infoLen(0), m_infoPos(0), m_enhInfoIsWifi(false),
+    m_enhInfoIdRequestNeeded(false), m_enhInfoIdRequested(false) {
   }
 
   // @copydoc
   void formatInfo(ostringstream* output, bool verbose, bool prefix) override;
 
   // @copydoc
-  void formatInfoJson(ostringstream* output) const override;
+  void formatInfoJson(ostringstream* output) override;
 
   // @copydoc
   result_t send(symbol_t value) override;
@@ -217,6 +218,15 @@ class EnhancedDevice : public BaseDevice, public EnhancedDeviceInterface {
   /** whether the device is known to be connected via WIFI. */
   bool m_enhInfoIsWifi;
 
+  /** whether the device ID request is needed. */
+  bool m_enhInfoIdRequestNeeded;
+
+  /** whether the device ID was already requested. */
+  bool m_enhInfoIdRequested;
+
+  /** a string with the ID of the enhanced device. */
+  string m_enhInfoId;
+
   /** a string describing the enhanced device temperature. */
   string m_enhInfoTemperature;