diff --git a/RFiDGear/DataAccessLayer/Remote/FromIO/ElatecNetProvider.cs b/RFiDGear/DataAccessLayer/Remote/FromIO/ElatecNetProvider.cs
index f7b6d7f..2bac191 100644
--- a/RFiDGear/DataAccessLayer/Remote/FromIO/ElatecNetProvider.cs
+++ b/RFiDGear/DataAccessLayer/Remote/FromIO/ElatecNetProvider.cs
@@ -24,7 +24,7 @@ public class ElatecNetProvider : ReaderDevice, IDisposable
 
         private readonly TWN4ReaderDevice readerDevice;
 
-        private ChipModel card;
+        private ChipModel hfTag;
         private bool _disposed;
 
         #region Constructor
@@ -73,26 +73,38 @@ public override ERROR ReadChipPublic()
                         Instance.Connect();
                     }
 
-                    card = readerDevice.GetSingleChip(true);
+                    hfTag = readerDevice.GetSingleChip(true);
 
-                    if (!string.IsNullOrWhiteSpace(card?.ChipIdentifier))
+                    var lfTag = readerDevice.GetSingleChip(false);
+                    var legicTag = readerDevice.GetSingleChip(true, true);
+
+                    if (
+                            !(
+                                string.IsNullOrWhiteSpace(hfTag?.ChipIdentifier) & 
+                                string.IsNullOrWhiteSpace(lfTag?.ChipIdentifier) &
+                                string.IsNullOrWhiteSpace(legicTag?.ChipIdentifier)
+                            )
+                        )
                     {
                         try
                         {
-                            GenericChip = new GenericChipModel(card.ChipIdentifier, 
-                                (CARD_TYPE)card.CardType, 
+
+                            GenericChip = new GenericChipModel(hfTag.ChipIdentifier, 
+                                (CARD_TYPE)hfTag.CardType, 
                                 ByteConverter.GetStringFrom(readerDevice.SAK), 
                                 ByteConverter.GetStringFrom(readerDevice.ATS),
                                 ByteConverter.GetStringFrom(readerDevice.L4VERSION)
                                 );
 
-                            var lfTag = readerDevice.GetSingleChip(false);
-
                             if (lfTag != null && lfTag?.CardType != ChipType.NOTAG)
                             {
                                 GenericChip.Slave = new GenericChipModel(lfTag.ChipIdentifier, (RFiDGear.DataAccessLayer.CARD_TYPE)lfTag.CardType);
                             }
-                            readerDevice.GetSingleChip(true);
+                            else if(legicTag != null && legicTag?.CardType != ChipType.NOTAG)
+                            {
+                                GenericChip.Slave = new GenericChipModel(legicTag.ChipIdentifier, (RFiDGear.DataAccessLayer.CARD_TYPE)legicTag.CardType);
+                            }
+                            //readerDevice.GetSingleChip(true);
 
                             return ERROR.NoError;
                         }
@@ -148,8 +160,13 @@ public override ERROR Connect()
         #region MifareClassic
         public override ERROR WriteMifareClassicSingleBlock(int _blockNumber, string _aKey, string _bKey, byte[] buffer)
         {
-            return WriteMifareClassicSingleSector(
-                CustomConverter.GetSectorNumberFromChipBasedDataBlockNumber(_blockNumber), _aKey, _bKey, buffer);
+            if (!readerDevice.MifareClassicLogin(_aKey, 0, (byte)CustomConverter.GetSectorNumberFromChipBasedDataBlockNumber(_blockNumber))) // No Access Allowed, try bKey
+            {
+                readerDevice.MifareClassicLogin(_bKey, 1, (byte)CustomConverter.GetSectorNumberFromChipBasedDataBlockNumber(_blockNumber));
+                
+            } // Login
+
+            return readerDevice.MifareClassicWriteBlock(buffer, (byte)_blockNumber) == true ? ERROR.NoError : ERROR.AuthenticationError;
         }
 
         public override ERROR ReadMifareClassicSingleSector(int sectorNumber, string aKey, string bKey)
@@ -418,10 +435,20 @@ public override ERROR ChangeMifareDesfireApplicationKey(string _applicationMaste
                         1,
                         (byte)(int)Enum.Parse(typeof(Elatec.NET.DESFireKeyType), Enum.GetName(typeof(RFiDGear.DataAccessLayer.DESFireKeyType), _keyTypeTarget))))
                     {
+                        if (readerDevice.DesfireAuthenticate(_applicationMasterKeyTarget, (byte)_keyNumberTarget, (byte)(int)Enum.Parse(typeof(Elatec.NET.DESFireKeyType), Enum.GetName(typeof(RFiDGear.DataAccessLayer.DESFireKeyType), _keyTypeTarget)), 1))
+                        {
+                            readerDevice.DesfireChangeKeySettings((byte)keySettings, 0, (byte)(int)Enum.Parse(typeof(Elatec.NET.DESFireKeyType), Enum.GetName(typeof(RFiDGear.DataAccessLayer.DESFireKeyType), _keyTypeTarget)));
+                        }
+
                         return ERROR.NoError;
                     }
                     else
                     {
+                        if (readerDevice.DesfireAuthenticate(_applicationMasterKeyTarget, (byte)_keyNumberTarget, (byte)(int)Enum.Parse(typeof(Elatec.NET.DESFireKeyType), Enum.GetName(typeof(RFiDGear.DataAccessLayer.DESFireKeyType), _keyTypeTarget)), 1))
+                        {
+                            readerDevice.DesfireChangeKeySettings((byte)keySettings, 0, (byte)(int)Enum.Parse(typeof(Elatec.NET.DESFireKeyType), Enum.GetName(typeof(RFiDGear.DataAccessLayer.DESFireKeyType), _keyTypeTarget)));
+                        }
+
                         return ERROR.AuthenticationError;
                     }
                 }
diff --git a/RFiDGear/Properties/AssemblyInfo.cs b/RFiDGear/Properties/AssemblyInfo.cs
index 9ba5fc4..320fc63 100644
--- a/RFiDGear/Properties/AssemblyInfo.cs
+++ b/RFiDGear/Properties/AssemblyInfo.cs
@@ -25,6 +25,6 @@
 //
 // You can specify all the values or you can use the default the Revision and
 // Build Numbers by using the '*' as shown below:
-[assembly: AssemblyVersion("1.3.*")]
+[assembly: AssemblyVersion("1.4.*")]
 [assembly: Guid("a34bc413-e349-4fd1-8b90-2eb95a333436")]
 [assembly: NeutralResourcesLanguage("")]
diff --git a/RFiDGear/ViewModel/MainWindowViewModel.cs b/RFiDGear/ViewModel/MainWindowViewModel.cs
index fd74aea..a8b696a 100644
--- a/RFiDGear/ViewModel/MainWindowViewModel.cs
+++ b/RFiDGear/ViewModel/MainWindowViewModel.cs
@@ -90,12 +90,6 @@ public class MainWindowViewModel : ObservableObject
 
         #region Events / Delegates
 
-        /// <summary>
-        /// will raise notifier to inform user about available updates
-        /// </summary>
-        /// <param name="sender"></param>
-        /// <param name="e"></param>
-        public delegate void updateReady(object sender, EventArgs e);
         #endregion
 
         #region Constructors
@@ -1158,12 +1152,12 @@ private void OnNewWriteToChipOnceCommand()
                             treeViewParentNodes.First(x => x.IsSelected).IsSelected = false;
                         }
 
-                        //only run if theres a card on the reader and its uid was previously added
+                        //only run if theres a hfTag on the reader and its uid was previously added
                         if (
                             !string.IsNullOrWhiteSpace(GenericChip.UID) &&
                             treeViewParentNodes.Any(x => x.UID == GenericChip.UID))
                         {
-                            //select current parentnode (card) on reader
+                            //select current parentnode (hfTag) on reader
                             treeViewParentNodes.First(x => x.UID == GenericChip.UID).IsSelected = true;
                             treeViewParentNodes.First(x => x.IsSelected).IsBeingProgrammed = true;
                         }
diff --git a/RFiDGear/ViewModel/TaskSetupViewModels/MifareDesfireSetupViewModel.cs b/RFiDGear/ViewModel/TaskSetupViewModels/MifareDesfireSetupViewModel.cs
index 728eef2..57c1b5c 100644
--- a/RFiDGear/ViewModel/TaskSetupViewModels/MifareDesfireSetupViewModel.cs
+++ b/RFiDGear/ViewModel/TaskSetupViewModels/MifareDesfireSetupViewModel.cs
@@ -2637,7 +2637,7 @@ private void OnNewChangeMasterCardKeyCommand()
                                             0,
                                             SelectedDesfireMasterKeyEncryptionTypeCurrent,
                                             DesfireMasterKeyTarget,
-                                            selectedDesfireAppKeyNumberTargetAsInt,
+                                            0,
                                             0,
                                             SelectedDesfireMasterKeyEncryptionTypeTarget, 0, 0, keySettings, keyVersionCurrentAsInt);