diff --git a/.gitignore b/.gitignore
index 1cca489..ea0e6d7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ source/ChanSort.opensdf
 /source/.vs/
 /source/packages/
 /source/ChanSort.Loader.PhilipsBin/DllClient.cs
+/source/ChanSort.Loader.MediaTek/.vs/
diff --git a/source/ChanSort.Loader.MediaTek/MediatekPlugin.cs b/source/ChanSort.Loader.MediaTek/MediatekPlugin.cs
index 10abb77..83c6c6b 100644
--- a/source/ChanSort.Loader.MediaTek/MediatekPlugin.cs
+++ b/source/ChanSort.Loader.MediaTek/MediatekPlugin.cs
@@ -1,4 +1,5 @@
-using System.IO;
+using System;
+using System.IO;
 using ChanSort.Api;
 
 namespace ChanSort.Loader.MediaTek;
@@ -6,16 +7,16 @@ namespace ChanSort.Loader.MediaTek;
 public class MediatekPlugin : ISerializerPlugin
 {
   public string DllName { get; set; }
-  public string PluginName => "MediaTek (MtkChannelList.xml)";
+  public string PluginName => "MediaTek (Mtk*.xml)";
   public string FileFilter => "Mtk*.xml";
 
   public SerializerBase CreateSerializer(string inputFile)
   {
-    var dir = Path.GetDirectoryName(inputFile);
+    var dir = Path.GetDirectoryName(inputFile) ?? "";
 
     // if there is a chanLst.bin file, let the Philips module handle the channel list
-    //if (File.Exists(Path.Combine(dir, "chanLst.bin")))
-    //  return null;
+    if (StringComparer.InvariantCultureIgnoreCase.Equals(Path.GetFileName(inputFile), "MtkChannelList.xml") && File.Exists(Path.Combine(dir, "chanLst.bin")))
+      return null;
 
     return new Serializer(inputFile);
   }
diff --git a/source/ChanSort.Loader.Philips/XmlSerializer.cs b/source/ChanSort.Loader.Philips/XmlSerializer.cs
index 5d93f67..233cad6 100644
--- a/source/ChanSort.Loader.Philips/XmlSerializer.cs
+++ b/source/ChanSort.Loader.Philips/XmlSerializer.cs
@@ -227,6 +227,16 @@ namespace ChanSort.Loader.Philips
           throw LoaderException.TryNext("No XML files found in folder structure");
 
         LoadAndValidateMtkChannelList(dir);
+
+        // version 120 and 125 ignore the modified main channel numbers and only take changes from the favorites.xml
+        if ((chanLstBin?.VersionMajor ?? 0) >= 120)
+        {
+          foreach (var list in this.DataRoot.ChannelLists)
+          {
+            if (!list.IsMixedSourceFavoritesList)
+              list.ReadOnly = true;
+          }
+        }
       }
       else
       {
@@ -718,8 +728,12 @@ namespace ChanSort.Loader.Philips
           if (others.Count == 0)
             throw LoaderException.Fail("MtkChannelList.xml doesn't contain a matching channel for " + ch1);
           if (others.Count > 1)
-            throw LoaderException.Fail("MtkChannelList.xml contains multiple matching channel for " + ch1);
-          
+          {
+            others = others.Where(c => c.OldProgramNr == ch1.OldProgramNr).ToList();
+            if (others.Count != 1)
+              throw LoaderException.Fail("MtkChannelList.xml contains multiple matching channel for " + ch1);
+          }
+
           var ch2 = others[0];
           if (ch1.OldProgramNr != ch2.OldProgramNr)
             throw LoaderException.Fail("MtkChannelList.xml contains a different channel number for " + ch1);
diff --git a/source/changelog.md b/source/changelog.md
index 045e7c2..f88a3e3 100644
--- a/source/changelog.md
+++ b/source/changelog.md
@@ -1,6 +1,12 @@
 ChanSort Change Log 
 ===================
 
+2024-10-15
+- Philips formats 120-125: opening the "MtkChannelList.xml" file will now load/save the whole Philips channel list
+  instead of only loading the data from that particular file.
+- Philips formats 120-125: the main program numbers are now read-only because the TV seems to ignores changes to them.
+  Changes to the favorite lists however are imported correctly.
+
 2024-10-02
 - Philips formats 100-125: further improvements/fixes for decoding non-latin characters
 - Sony Bravia 7 (2024) sdb.xml: support to read it as a reference list (the TV will ignore any edits to this file)